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80421463752 = 23372272108807
BaseRepresentation
bin100101011100101111…
…1100010011011001000
321200120201011122120120
41022321133202123020
52304200343320002
6100540051023240
75544630106620
oct1127137423310
9250521148516
1080421463752
1131119902033
1213704b9ab20
13777854cb56
143c6cb29880
15215a4c1cbc
hex12b97e26c8

80421463752 has 64 divisors (see below), whose sum is σ = 230787947520. Its totient is φ = 22876327488.

The previous prime is 80421463747. The next prime is 80421463753. The reversal of 80421463752 is 25736412408.

It is a super-2 number, since 2×804214637522 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (80421463753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1016268 + ... + 1092539.

It is an arithmetic number, because the mean of its divisors is an integer number (3606061680).

Almost surely, 280421463752 is an apocalyptic number.

It is an amenable number.

80421463752 is an abundant number, since it is smaller than the sum of its proper divisors (150366483768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80421463752 is a wasteful number, since it uses less digits than its factorization.

80421463752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2109050 (or 2109046 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 80421463752 in words is "eighty billion, four hundred twenty-one million, four hundred sixty-three thousand, seven hundred fifty-two".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 168 227 454 681 908 1362 1589 1816 2724 3178 4767 5448 6356 9534 12712 19068 38136 2108807 4217614 6326421 8435228 12652842 14761649 16870456 25305684 29523298 44284947 50611368 59046596 88569894 118093192 177139788 354279576 478699189 957398378 1436097567 1914796756 2872195134 3350894323 3829593512 5744390268 6701788646 10052682969 11488780536 13403577292 20105365938 26807154584 40210731876 80421463752