79221378732 has 24 divisors (see below), whose sum is σ = 184860490416. Its totient is φ = 26405611008.

The previous prime is 79221378721. The next prime is 79221378737. The reversal of 79221378732 is 23787312297.

It is not an unprimeable number, because it can be changed into a prime (79221378737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39508 + ... + 400004.

It is an arithmetic number, because the mean of its divisors is an integer number (7702520434).

Almost surely, 2^79221378732 is an apocalyptic number.

It is an amenable number.

79221378732 is an abundant number, since it is smaller than the sum of its proper divisors (105639111684).

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

79221378732 is a wasteful number, since it uses less digits than its factorization.

79221378732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378817 (or 378815 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 51.

The spelling of 79221378732 in words is "seventy-nine billion, two hundred twenty-one million, three hundred seventy-eight thousand, seven hundred thirty-two".