79286428646 has 8 divisors (see below), whose sum is σ = 118938796200. Its totient is φ = 39640163248.

The previous prime is 79286428631. The next prime is 79286428679. The reversal of 79286428646 is 64682468297.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1492916 + ... + 1545111.

It is an arithmetic number, because the mean of its divisors is an integer number (14867349525).

Almost surely, 2^79286428646 is an apocalyptic number.

79286428646 is a deficient number, since it is larger than the sum of its proper divisors (39652367554).

79286428646 is a wasteful number, since it uses less digits than its factorization.

79286428646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3051078.

The product of its digits is 55738368, while the sum is 62.

The spelling of 79286428646 in words is "seventy-nine billion, two hundred eighty-six million, four hundred twenty-eight thousand, six hundred forty-six".