79977683251 has 8 divisors (see below), whose sum is σ = 84708748944. Its totient is φ = 75249561600.

The previous prime is 79977683249. The next prime is 79977683273. The reversal of 79977683251 is 15238677997.

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

It is not a de Polignac number, because 79977683251 - 2¹ = 79977683249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79977683281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679950 + ... + 788851.

It is an arithmetic number, because the mean of its divisors is an integer number (10588593618).

Almost surely, 2^79977683251 is an apocalyptic number.

79977683251 is a deficient number, since it is larger than the sum of its proper divisors (4731065693).

79977683251 is a wasteful number, since it uses less digits than its factorization.

79977683251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472021.

The product of its digits is 40007520, while the sum is 64.

The spelling of 79977683251 in words is "seventy-nine billion, nine hundred seventy-seven million, six hundred eighty-three thousand, two hundred fifty-one".