79854673920 has 896 divisors, whose sum is σ = 318881857536. Its totient is φ = 16647192576.

The previous prime is 79854673919. The next prime is 79854673931. The reversal of 79854673920 is 2937645897.

It is a tau number, because it is divible by the number of its divisors (896).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 628776897 + ... + 628777023.

Almost surely, 2^79854673920 is an apocalyptic number.

79854673920 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 79854673920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159440928768).

79854673920 is an abundant number, since it is smaller than the sum of its proper divisors (239027183616).

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

79854673920 is a wasteful number, since it uses less digits than its factorization.

79854673920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 60.

The spelling of 79854673920 in words is "seventy-nine billion, eight hundred fifty-four million, six hundred seventy-three thousand, nine hundred twenty".