79134928840 has 384 divisors, whose sum is σ = 214144819200. Its totient is φ = 26044761600.

The previous prime is 79134928837. The next prime is 79134928853. The reversal of 79134928840 is 4882943197.

It is a Harshad number since it is a multiple of its sum of digits (55).

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, 768300229 + ... + 768300331.

It is an arithmetic number, because the mean of its divisors is an integer number (557668800).

Almost surely, 2^79134928840 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 79134928840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107072409600).

79134928840 is an abundant number, since it is smaller than the sum of its proper divisors (135009890360).

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

79134928840 is a wasteful number, since it uses less digits than its factorization.

79134928840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 55.

The spelling of 79134928840 in words is "seventy-nine billion, one hundred thirty-four million, nine hundred twenty-eight thousand, eight hundred forty".