78597129764 has 6 divisors (see below), whose sum is σ = 137544977094. Its totient is φ = 39298564880.

The previous prime is 78597129701. The next prime is 78597129769. The reversal of 78597129764 is 46792179587.

It can be written as a sum of positive squares in only one way, i.e., 73138875364 + 5458254400 = 270442^2 + 73880^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 78597129764.

It is not an unprimeable number, because it can be changed into a prime (78597129769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9824641217 + ... + 9824641224.

It is an arithmetic number, because the mean of its divisors is an integer number (22924162849).

Almost surely, 2^78597129764 is an apocalyptic number.

It is an amenable number.

78597129764 is a deficient number, since it is larger than the sum of its proper divisors (58947847330).

78597129764 is a wasteful number, since it uses less digits than its factorization.

78597129764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19649282445 (or 19649282443 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 65.

The spelling of 78597129764 in words is "seventy-eight billion, five hundred ninety-seven million, one hundred twenty-nine thousand, seven hundred sixty-four".