79221264650 has 48 divisors (see below), whose sum is σ = 160921218240. Its totient is φ = 28776537600.

The previous prime is 79221264631. The next prime is 79221264667. The reversal of 79221264650 is 5646212297.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 433427 + ... + 588473.

It is an arithmetic number, because the mean of its divisors is an integer number (3352525380).

Almost surely, 2^79221264650 is an apocalyptic number.

79221264650 is an abundant number, since it is smaller than the sum of its proper divisors (81699953590).

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

79221264650 is a wasteful number, since it uses less digits than its factorization.

79221264650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155999 (or 155994 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 79221264650 in words is "seventy-nine billion, two hundred twenty-one million, two hundred sixty-four thousand, six hundred fifty".