79020200020 has 24 divisors (see below), whose sum is σ = 175703739624. Its totient is φ = 29748781056.

The previous prime is 79020200011. The next prime is 79020200023. The reversal of 79020200020 is 2000202097.

It can be written as a sum of positive squares in 4 ways, for example, as 574273296 + 78445926724 = 23964^2 + 280082^2 .

It is a super-2 number, since 2×79020200020² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 79020199964 and 79020200000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79020200023) 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, 116205837 + ... + 116206516.

It is an arithmetic number, because the mean of its divisors is an integer number (7320989151).

Almost surely, 2^79020200020 is an apocalyptic number.

It is an amenable number.

79020200020 is an abundant number, since it is smaller than the sum of its proper divisors (96683539604).

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

79020200020 is a wasteful number, since it uses less digits than its factorization.

79020200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232412379 (or 232412377 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The spelling of 79020200020 in words is "seventy-nine billion, twenty million, two hundred thousand, twenty".