79428060687 has 4 divisors (see below), whose sum is σ = 105904080920. Its totient is φ = 52952040456.

The previous prime is 79428060659. The next prime is 79428060709. The reversal of 79428060687 is 78606082497.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 79428060687 - 2¹⁸ = 79427798543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79428060487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13238010112 + ... + 13238010117.

It is an arithmetic number, because the mean of its divisors is an integer number (26476020230).

Almost surely, 2^79428060687 is an apocalyptic number.

79428060687 is a deficient number, since it is larger than the sum of its proper divisors (26476020233).

79428060687 is a wasteful number, since it uses less digits than its factorization.

79428060687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26476020232.

The product of its (nonzero) digits is 8128512, while the sum is 57.

The spelling of 79428060687 in words is "seventy-nine billion, four hundred twenty-eight million, sixty thousand, six hundred eighty-seven".