79923971004 has 12 divisors (see below), whose sum is σ = 186489265704. Its totient is φ = 26641323664.

The previous prime is 79923970979. The next prime is 79923971021. The reversal of 79923971004 is 40017932997.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×79923971004² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3330165447 + ... + 3330165470.

It is an arithmetic number, because the mean of its divisors is an integer number (15540772142).

Almost surely, 2^79923971004 is an apocalyptic number.

It is an amenable number.

79923971004 is an abundant number, since it is smaller than the sum of its proper divisors (106565294700).

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

79923971004 is a wasteful number, since it uses less digits than its factorization.

79923971004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6660330924 (or 6660330922 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 51.

The spelling of 79923971004 in words is "seventy-nine billion, nine hundred twenty-three million, nine hundred seventy-one thousand, four".