77968158719 has 24 divisors (see below), whose sum is σ = 89836855632. Its totient is φ = 67098430080.

The previous prime is 77968158701. The next prime is 77968158731. The reversal of 77968158719 is 91785186977.

It is not a de Polignac number, because 77968158719 - 2²⁴ = 77951381503 is a prime.

It is a super-2 number, since 2×77968158719² (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 (77968158739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5763107 + ... + 5776619.

It is an arithmetic number, because the mean of its divisors is an integer number (3743202318).

Almost surely, 2^77968158719 is an apocalyptic number.

77968158719 is a deficient number, since it is larger than the sum of its proper divisors (11868696913).

77968158719 is a wasteful number, since it uses less digits than its factorization.

77968158719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15015 (or 14996 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 68.

The spelling of 77968158719 in words is "seventy-seven billion, nine hundred sixty-eight million, one hundred fifty-eight thousand, seven hundred nineteen".