79616454940 has 96 divisors (see below), whose sum is σ = 189762306048. Its totient is φ = 27796608000.

The previous prime is 79616454919. The next prime is 79616454947. The reversal of 79616454940 is 4945461697.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79616454947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 820180 + ... + 912100.

It is an arithmetic number, because the mean of its divisors is an integer number (1976690688).

Almost surely, 2^79616454940 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 79616454940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94881153024).

79616454940 is an abundant number, since it is smaller than the sum of its proper divisors (110145851108).

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

79616454940 is a wasteful number, since it uses less digits than its factorization.

79616454940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92099 (or 92097 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 79616454940 in words is "seventy-nine billion, six hundred sixteen million, four hundred fifty-four thousand, nine hundred forty".