77954166631496 has 16 divisors (see below), whose sum is σ = 146338274678400. Its totient is φ = 38930626717264.

The previous prime is 77954166631493. The next prime is 77954166631501. The reversal of 77954166631496 is 69413666145977.

It is a super-2 number, since 2×77954166631496² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77954166631493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5807067680 + ... + 5807081103.

It is an arithmetic number, because the mean of its divisors is an integer number (9146142167400).

Almost surely, 2^{77954166631496} is an apocalyptic number.

It is an amenable number.

77954166631496 is a deficient number, since it is larger than the sum of its proper divisors (68384108046904).

77954166631496 is a wasteful number, since it uses less digits than its factorization.

77954166631496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11614149628 (or 11614149624 counting only the distinct ones).

The product of its digits is 1234517760, while the sum is 74.

The spelling of 77954166631496 in words is "seventy-seven trillion, nine hundred fifty-four billion, one hundred sixty-six million, six hundred thirty-one thousand, four hundred ninety-six".