78468386565364 has 6 divisors (see below), whose sum is σ = 137319676489394. Its totient is φ = 39234193282680.

The previous prime is 78468386565311. The next prime is 78468386565367. The reversal of 78468386565364 is 46356568386487.

It can be written as a sum of positive squares in only one way, i.e., 73903113342864 + 4565273222500 = 8596692^2 + 2136650^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78468386565367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9808548320667 + ... + 9808548320674.

Almost surely, 2^{78468386565364} is an apocalyptic number.

It is an amenable number.

78468386565364 is a deficient number, since it is larger than the sum of its proper divisors (58851289924030).

78468386565364 is a wasteful number, since it uses less digits than its factorization.

78468386565364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19617096641345 (or 19617096641343 counting only the distinct ones).

The product of its digits is 16721510400, while the sum is 79.

The spelling of 78468386565364 in words is "seventy-eight trillion, four hundred sixty-eight billion, three hundred eighty-six million, five hundred sixty-five thousand, three hundred sixty-four".