79286428645 has 16 divisors (see below), whose sum is σ = 96270476400. Its totient is φ = 62680384000.

The previous prime is 79286428631. The next prime is 79286428679. The reversal of 79286428645 is 54682468297.

It can be written as a sum of positive squares in 8 ways, for example, as 4520276289 + 74766152356 = 67233^2 + 273434^2 .

It is not a de Polignac number, because 79286428645 - 2²⁵ = 79252874213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112431 + ... + 413779.

It is an arithmetic number, because the mean of its divisors is an integer number (6016904775).

Almost surely, 2^79286428645 is an apocalyptic number.

It is an amenable number.

79286428645 is a deficient number, since it is larger than the sum of its proper divisors (16984047755).

79286428645 is a wasteful number, since it uses less digits than its factorization.

79286428645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301976.

The product of its digits is 46448640, while the sum is 61.

The spelling of 79286428645 in words is "seventy-nine billion, two hundred eighty-six million, four hundred twenty-eight thousand, six hundred forty-five".