77357116431 has 24 divisors (see below), whose sum is σ = 128706166784. Its totient is φ = 43855998480.

The previous prime is 77357116423. The next prime is 77357116483. The reversal of 77357116431 is 13461175377.

77357116431 is a `hidden beast` number, since 7 + 73 + 571 + 1 + 6 + 4 + 3 + 1 = 666.

It is not a de Polignac number, because 77357116431 - 2³ = 77357116423 is a prime.

It is a super-2 number, since 2×77357116431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77357114431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4826215 + ... + 4842216.

Almost surely, 2^77357116431 is an apocalyptic number.

77357116431 is a deficient number, since it is larger than the sum of its proper divisors (51349050353).

77357116431 is a wasteful number, since it uses less digits than its factorization.

77357116431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9668571 (or 9668568 counting only the distinct ones).

The product of its digits is 370440, while the sum is 45.

The spelling of 77357116431 in words is "seventy-seven billion, three hundred fifty-seven million, one hundred sixteen thousand, four hundred thirty-one".