77831351696 has 40 divisors (see below), whose sum is σ = 172382520384. Its totient is φ = 33348228480.

The previous prime is 77831351671. The next prime is 77831351701. The reversal of 77831351696 is 69615313877.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393326 + ... + 557106.

Almost surely, 2^77831351696 is an apocalyptic number.

It is an amenable number.

77831351696 is an abundant number, since it is smaller than the sum of its proper divisors (94551168688).

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

77831351696 is a wasteful number, since it uses less digits than its factorization.

77831351696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168039 (or 168033 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 56.

The spelling of 77831351696 in words is "seventy-seven billion, eight hundred thirty-one million, three hundred fifty-one thousand, six hundred ninety-six".