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80491315200 = 2193522389
BaseRepresentation
bin100101011110110101…
…0000000000000000000
321200202120121110202020
41022331222000000000
52304321234041300
6100551024121440
75546435614302
oct1127552000000
9250676543666
1080491315200
11311552814aa
1213724466280
137789b68b7a
143c7810d972
1521616bd8a0
hex12bda80000

80491315200 has 480 divisors, whose sum is σ = 280850328000. Its totient is φ = 20300431360.

The previous prime is 80491315183. The next prime is 80491315211. The reversal of 80491315200 is 251319408.

It is a tau number, because it is divible by the number of its divisors (480).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 904396756 + ... + 904396844.

It is an arithmetic number, because the mean of its divisors is an integer number (585104850).

Almost surely, 280491315200 is an apocalyptic number.

80491315200 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80491315200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140425164000).

80491315200 is an abundant number, since it is smaller than the sum of its proper divisors (200359012800).

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

80491315200 is an frugal number, since it uses more digits than its factorization.

80491315200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 80491315200 in words is "eighty billion, four hundred ninety-one million, three hundred fifteen thousand, two hundred".