79690569993 has 48 divisors (see below), whose sum is σ = 125451181440. Its totient is φ = 48605432832.

The previous prime is 79690569977. The next prime is 79690570027. The reversal of 79690569993 is 39996509697.

It is not a de Polignac number, because 79690569993 - 2⁴ = 79690569977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79690569913) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 363705 + ... + 540057.

It is an arithmetic number, because the mean of its divisors is an integer number (2613566280).

Almost surely, 2^79690569993 is an apocalyptic number.

It is an amenable number.

79690569993 is a deficient number, since it is larger than the sum of its proper divisors (45760611447).

79690569993 is a wasteful number, since it uses less digits than its factorization.

79690569993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176478 (or 176475 counting only the distinct ones).

The product of its (nonzero) digits is 223205220, while the sum is 72.

The spelling of 79690569993 in words is "seventy-nine billion, six hundred ninety million, five hundred sixty-nine thousand, nine hundred ninety-three".