79621864192 has 72 divisors (see below), whose sum is σ = 176679762560. Its totient is φ = 35563069440.

The previous prime is 79621864183. The next prime is 79621864193. The reversal of 79621864192 is 29146812697.

It is not an unprimeable number, because it can be changed into a prime (79621864193) 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, 282717 + ... + 489052.

Almost surely, 2^79621864192 is an apocalyptic number.

It is an amenable number.

79621864192 is an abundant number, since it is smaller than the sum of its proper divisors (97057898368).

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

79621864192 is a wasteful number, since it uses less digits than its factorization.

79621864192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771829 (or 771815 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 55.

The spelling of 79621864192 in words is "seventy-nine billion, six hundred twenty-one million, eight hundred sixty-four thousand, one hundred ninety-two".