69139079808 has 32 divisors (see below), whose sum is σ = 183650681760. Its totient is φ = 23046359808.

The previous prime is 69139079783. The next prime is 69139079819. The reversal of 69139079808 is 80897093196.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

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, 90024460 + ... + 90025227.

It is an arithmetic number, because the mean of its divisors is an integer number (5739083805).

Almost surely, 2^69139079808 is an apocalyptic number.

It is an amenable number.

69139079808 is an abundant number, since it is smaller than the sum of its proper divisors (114511601952).

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

69139079808 is a wasteful number, since it uses less digits than its factorization.

69139079808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180049704 (or 180049692 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 60.

The spelling of 69139079808 in words is "sixty-nine billion, one hundred thirty-nine million, seventy-nine thousand, eight hundred eight".