79857849758 has 32 divisors (see below), whose sum is σ = 129128797728. Its totient is φ = 36902016000.

The previous prime is 79857849713. The next prime is 79857849761. The reversal of 79857849758 is 85794875897.

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, 1214441 + ... + 1278507.

It is an arithmetic number, because the mean of its divisors is an integer number (4035274929).

Almost surely, 2^79857849758 is an apocalyptic number.

79857849758 is a deficient number, since it is larger than the sum of its proper divisors (49270947970).

79857849758 is a wasteful number, since it uses less digits than its factorization.

79857849758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64748.

The product of its digits is 1422489600, while the sum is 77.

The spelling of 79857849758 in words is "seventy-nine billion, eight hundred fifty-seven million, eight hundred forty-nine thousand, seven hundred fifty-eight".