79740910866 has 16 divisors (see below), whose sum is σ = 159527836800. Its totient is φ = 26572634448.

The previous prime is 79740910853. The next prime is 79740910993. The reversal of 79740910866 is 66801904797.

It is a super-2 number, since 2×79740910866² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1894746 + ... + 1936373.

It is an arithmetic number, because the mean of its divisors is an integer number (9970489800).

Almost surely, 2^79740910866 is an apocalyptic number.

79740910866 is an abundant number, since it is smaller than the sum of its proper divisors (79786925934).

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

79740910866 is a wasteful number, since it uses less digits than its factorization.

79740910866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3834593.

The product of its (nonzero) digits is 4572288, while the sum is 57.

The spelling of 79740910866 in words is "seventy-nine billion, seven hundred forty million, nine hundred ten thousand, eight hundred sixty-six".