77864337215348 has 48 divisors (see below), whose sum is σ = 137741015596800. Its totient is φ = 38510971413120.

The previous prime is 77864337215347. The next prime is 77864337215377. The reversal of 77864337215348 is 84351273346877.

It is a super-2 number, since 2×77864337215348² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77864337215347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1563296261 + ... + 1563346067.

It is an arithmetic number, because the mean of its divisors is an integer number (2869604491600).

Almost surely, 2^{77864337215348} is an apocalyptic number.

It is an amenable number.

77864337215348 is a deficient number, since it is larger than the sum of its proper divisors (59876678381452).

77864337215348 is a wasteful number, since it uses less digits than its factorization.

77864337215348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55800 (or 55798 counting only the distinct ones).

The product of its digits is 568995840, while the sum is 68.

The spelling of 77864337215348 in words is "seventy-seven trillion, eight hundred sixty-four billion, three hundred thirty-seven million, two hundred fifteen thousand, three hundred forty-eight".