77912839319 has 32 divisors (see below), whose sum is σ = 93993799680. Its totient is φ = 63139824000.

The previous prime is 77912839297. The next prime is 77912839327. The reversal of 77912839319 is 91393821977.

It is a cyclic number.

It is not a de Polignac number, because 77912839319 - 2²⁰ = 77911790743 is a prime.

It is a super-2 number, since 2×77912839319² (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 (77912839379) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7558469 + ... + 7568769.

It is an arithmetic number, because the mean of its divisors is an integer number (2937306240).

Almost surely, 2^77912839319 is an apocalyptic number.

77912839319 is a deficient number, since it is larger than the sum of its proper divisors (16080960361).

77912839319 is a wasteful number, since it uses less digits than its factorization.

77912839319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10871.

The product of its digits is 5143824, while the sum is 59.

The spelling of 77912839319 in words is "seventy-seven billion, nine hundred twelve million, eight hundred thirty-nine thousand, three hundred nineteen".