79021243884 has 96 divisors (see below), whose sum is σ = 211865391360. Its totient is φ = 22671187200.

The previous prime is 79021243843. The next prime is 79021243901. The reversal of 79021243884 is 48834212097.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4337274 + ... + 4355454.

It is an arithmetic number, because the mean of its divisors is an integer number (2206931160).

Almost surely, 2^79021243884 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 79021243884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105932695680).

79021243884 is an abundant number, since it is smaller than the sum of its proper divisors (132844147476).

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

79021243884 is a wasteful number, since it uses less digits than its factorization.

79021243884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19951 (or 19949 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 79021243884 in words is "seventy-nine billion, twenty-one million, two hundred forty-three thousand, eight hundred eighty-four".