79892955558 has 96 divisors (see below), whose sum is σ = 198877226400. Its totient is φ = 23734698624.

The previous prime is 79892955547. The next prime is 79892955599. The reversal of 79892955558 is 85555929897.

It is a super-3 number, since 3×79892955558³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 113716 + ... + 415592.

It is an arithmetic number, because the mean of its divisors is an integer number (2071637775).

Almost surely, 2^79892955558 is an apocalyptic number.

79892955558 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 79892955558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99438613200).

79892955558 is an abundant number, since it is smaller than the sum of its proper divisors (118984270842).

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

79892955558 is a wasteful number, since it uses less digits than its factorization.

79892955558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301943 (or 301924 counting only the distinct ones).

The product of its digits is 408240000, while the sum is 72.

The spelling of 79892955558 in words is "seventy-nine billion, eight hundred ninety-two million, nine hundred fifty-five thousand, five hundred fifty-eight".