102139879174 has 16 divisors (see below), whose sum is σ = 153447793200. Its totient is φ = 50990656384.

The previous prime is 102139879139. The next prime is 102139879207. The reversal of 102139879174 is 471978931201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6349089 + ... + 6365155.

It is an arithmetic number, because the mean of its divisors is an integer number (9590487075).

Almost surely, 2^102139879174 is an apocalyptic number.

102139879174 is a deficient number, since it is larger than the sum of its proper divisors (51307914026).

102139879174 is a wasteful number, since it uses less digits than its factorization.

102139879174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20807.

The product of its (nonzero) digits is 762048, while the sum is 52.

The spelling of 102139879174 in words is "one hundred two billion, one hundred thirty-nine million, eight hundred seventy-nine thousand, one hundred seventy-four".