79703800020 has 288 divisors, whose sum is σ = 264286713600. Its totient is φ = 19325952000.

The previous prime is 79703799997. The next prime is 79703800031. The reversal of 79703800020 is 2000830797.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 56971281 + ... + 56972679.

It is an arithmetic number, because the mean of its divisors is an integer number (917662200).

Almost surely, 2^79703800020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79703800020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132143356800).

79703800020 is an abundant number, since it is smaller than the sum of its proper divisors (184582913580).

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

79703800020 is a wasteful number, since it uses less digits than its factorization.

79703800020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775 (or 1770 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The spelling of 79703800020 in words is "seventy-nine billion, seven hundred three million, eight hundred thousand, twenty".