79399652220 has 288 divisors, whose sum is σ = 292090326528. Its totient is φ = 17726107392.

The previous prime is 79399652219. The next prime is 79399652221. The reversal of 79399652220 is 2225699397.

79399652220 is a `hidden beast` number, since 7 + 9 + 3 + 9 + 96 + 522 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (79399652219) and next prime (79399652221).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79399652221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1435722 + ... + 1489998.

Almost surely, 2^79399652220 is an apocalyptic number.

79399652220 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79399652220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146045163264).

79399652220 is an abundant number, since it is smaller than the sum of its proper divisors (212690674308).

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

79399652220 is a wasteful number, since it uses less digits than its factorization.

79399652220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54351 (or 54337 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 54.

The spelling of 79399652220 in words is "seventy-nine billion, three hundred ninety-nine million, six hundred fifty-two thousand, two hundred twenty".