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511212340120 = 23579161776057
BaseRepresentation
bin1110111000001101010…
…00010100001110011000
31210212112021012121100211
413130012220110032120
531333430324340440
61030503034340504
751635214123526
oct7340650241630
91725467177324
10511212340120
11187893047599
12830abb8a734
1339290060461
141aa583a9316
15d470167eea
hex7706a14398

511212340120 has 32 divisors (see below), whose sum is σ = 1164787617600. Its totient is φ = 201896517888.

The previous prime is 511212340099. The next prime is 511212340123. The reversal of 511212340120 is 21043212115.

It is a super-2 number, since 2×5112123401202 (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 511212340091 and 511212340100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511212340123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80884869 + ... + 80891188.

It is an arithmetic number, because the mean of its divisors is an integer number (36399613050).

Almost surely, 2511212340120 is an apocalyptic number.

It is an amenable number.

511212340120 is an abundant number, since it is smaller than the sum of its proper divisors (653575277480).

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

511212340120 is a wasteful number, since it uses less digits than its factorization.

511212340120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161776147 (or 161776143 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 511212340120 its reverse (21043212115), we get a palindrome (532255552235).

The spelling of 511212340120 in words is "five hundred eleven billion, two hundred twelve million, three hundred forty thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 79 158 316 395 632 790 1580 3160 161776057 323552114 647104228 808880285 1294208456 1617760570 3235521140 6471042280 12780308503 25560617006 51121234012 63901542515 102242468024 127803085030 255606170060 511212340120