77329431432 has 64 divisors (see below), whose sum is σ = 234331617600. Its totient is φ = 23433160320.

The previous prime is 77329431427. The next prime is 77329431449. The reversal of 77329431432 is 23413492377.

77329431432 is a `hidden beast` number, since 7 + 7 + 329 + 4 + 314 + 3 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16270653 + ... + 16275404.

It is an arithmetic number, because the mean of its divisors is an integer number (3661431525).

Almost surely, 2^77329431432 is an apocalyptic number.

77329431432 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

77329431432 is an abundant number, since it is smaller than the sum of its proper divisors (157002186168).

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

77329431432 is a wasteful number, since it uses less digits than its factorization.

77329431432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32546083 (or 32546073 counting only the distinct ones).

The product of its digits is 762048, while the sum is 45.

The spelling of 77329431432 in words is "seventy-seven billion, three hundred twenty-nine million, four hundred thirty-one thousand, four hundred thirty-two".