76557648912 has 40 divisors (see below), whose sum is σ = 204593720640. Its totient is φ = 24639242880.

The previous prime is 76557648911. The next prime is 76557648919. The reversal of 76557648912 is 21984675567.

It is a happy number.

It is a super-2 number, since 2×76557648912² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (76557648911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27497764 + ... + 27500547.

It is an arithmetic number, because the mean of its divisors is an integer number (5114843016).

Almost surely, 2^76557648912 is an apocalyptic number.

It is an amenable number.

76557648912 is an abundant number, since it is smaller than the sum of its proper divisors (128036071728).

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

76557648912 is a wasteful number, since it uses less digits than its factorization.

76557648912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54998351 (or 54998345 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 60.

It can be divided in two parts, 7655 and 7648912, that added together give a palindrome (7656567).

The spelling of 76557648912 in words is "seventy-six billion, five hundred fifty-seven million, six hundred forty-eight thousand, nine hundred twelve".