79321822872 has 32 divisors (see below), whose sum is σ = 201555455280. Its totient is φ = 26007154560.

The previous prime is 79321822871. The next prime is 79321822889. The reversal of 79321822872 is 27822812397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79321822871) 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, 27089323 + ... + 27092250.

Almost surely, 2^79321822872 is an apocalyptic number.

It is an amenable number.

79321822872 is an abundant number, since it is smaller than the sum of its proper divisors (122233632408).

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

79321822872 is a wasteful number, since it uses less digits than its factorization.

79321822872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54181643 (or 54181639 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 51.

The spelling of 79321822872 in words is "seventy-nine billion, three hundred twenty-one million, eight hundred twenty-two thousand, eight hundred seventy-two".