79031987053 has 4 divisors (see below), whose sum is σ = 79032887388. Its totient is φ = 79031086720.

The previous prime is 79031987017. The next prime is 79031987071. The reversal of 79031987053 is 35078913097.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 41266672164 + 37765314889 = 203142^2 + 194333^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79031987053 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 (79031988053) 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, 302308 + ... + 499453.

It is an arithmetic number, because the mean of its divisors is an integer number (19758221847).

Almost surely, 2^79031987053 is an apocalyptic number.

It is an amenable number.

79031987053 is a deficient number, since it is larger than the sum of its proper divisors (900335).

79031987053 is an equidigital number, since it uses as much as digits as its factorization.

79031987053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900334.

The product of its (nonzero) digits is 1428840, while the sum is 52.

The spelling of 79031987053 in words is "seventy-nine billion, thirty-one million, nine hundred eighty-seven thousand, fifty-three".