78596889818 has 16 divisors (see below), whose sum is σ = 118547620200. Its totient is φ = 39081517056.

The previous prime is 78596889799. The next prime is 78596889823. The reversal of 78596889818 is 81898869587.

It can be written as a sum of positive squares in 4 ways, for example, as 75654152809 + 2942737009 = 275053^2 + 54247^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190358 + ... + 439806.

Almost surely, 2^78596889818 is an apocalyptic number.

78596889818 is a deficient number, since it is larger than the sum of its proper divisors (39950730382).

78596889818 is a wasteful number, since it uses less digits than its factorization.

78596889818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250321.

The product of its digits is 557383680, while the sum is 77.

The spelling of 78596889818 in words is "seventy-eight billion, five hundred ninety-six million, eight hundred eighty-nine thousand, eight hundred eighteen".