77692315393 has 12 divisors (see below), whose sum is σ = 98592846192. Its totient is φ = 60539466120.

The previous prime is 77692315381. The next prime is 77692315397. The reversal of 77692315393 is 39351329677.

It is not a de Polignac number, because 77692315393 - 2⁹ = 77692314881 is a prime.

It is a super-2 number, since 2×77692315393² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77692315397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72070255 + ... + 72071332.

It is an arithmetic number, because the mean of its divisors is an integer number (8216070516).

Almost surely, 2^77692315393 is an apocalyptic number.

It is an amenable number.

77692315393 is a deficient number, since it is larger than the sum of its proper divisors (20900530799).

77692315393 is a wasteful number, since it uses less digits than its factorization.

77692315393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144141612 (or 144141605 counting only the distinct ones).

The product of its digits is 6429780, while the sum is 55.

The spelling of 77692315393 in words is "seventy-seven billion, six hundred ninety-two million, three hundred fifteen thousand, three hundred ninety-three".