77729932327896 has 96 divisors (see below), whose sum is σ = 213495497280000. Its totient is φ = 25544546419392.

The previous prime is 77729932327843. The next prime is 77729932327907. The reversal of 77729932327896 is 69872323992777.

77729932327896 is a `hidden beast` number, since 7 + 7 + 7 + 299 + 3 + 232 + 7 + 8 + 96 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6119196 + ... + 13889003.

It is an arithmetic number, because the mean of its divisors is an integer number (2223911430000).

Almost surely, 2^{77729932327896} is an apocalyptic number.

It is an amenable number.

77729932327896 is an abundant number, since it is smaller than the sum of its proper divisors (135765564952104).

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

77729932327896 is a wasteful number, since it uses less digits than its factorization.

77729932327896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20008973 (or 20008966 counting only the distinct ones).

The product of its digits is 6049137024, while the sum is 81.

The spelling of 77729932327896 in words is "seventy-seven trillion, seven hundred twenty-nine billion, nine hundred thirty-two million, three hundred twenty-seven thousand, eight hundred ninety-six".