79919720514 has 12 divisors (see below), whose sum is σ = 173159394486. Its totient is φ = 26639906832.

The previous prime is 79919720513. The next prime is 79919720519. The reversal of 79919720514 is 41502791997.

79919720514 is a `hidden beast` number, since 7 + 99 + 19 + 7 + 20 + 514 = 666.

It can be written as a sum of positive squares in only one way, i.e., 76442849289 + 3476871225 = 276483^2 + 58965^2 .

It is not an unprimeable number, because it can be changed into a prime (79919720513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2219992219 + ... + 2219992254.

Almost surely, 2^79919720514 is an apocalyptic number.

79919720514 is an abundant number, since it is smaller than the sum of its proper divisors (93239673972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79919720514 is a wasteful number, since it uses less digits than its factorization.

79919720514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4439984481 (or 4439984478 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 54.

The spelling of 79919720514 in words is "seventy-nine billion, nine hundred nineteen million, seven hundred twenty thousand, five hundred fourteen".