102714979878 has 32 divisors (see below), whose sum is σ = 260863441920. Its totient is φ = 29347137000.

The previous prime is 102714979877. The next prime is 102714979891. The reversal of 102714979878 is 878979417201.

102714979878 is a `hidden beast` number, since 1 + 0 + 2 + 71 + 497 + 9 + 8 + 78 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102714979877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135865998 + ... + 135866753.

It is an arithmetic number, because the mean of its divisors is an integer number (8151982560).

Almost surely, 2^102714979878 is an apocalyptic number.

102714979878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

102714979878 is an abundant number, since it is smaller than the sum of its proper divisors (158148462042).

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

102714979878 is a wasteful number, since it uses less digits than its factorization.

102714979878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271732769 (or 271732763 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 63.

The spelling of 102714979878 in words is "one hundred two billion, seven hundred fourteen million, nine hundred seventy-nine thousand, eight hundred seventy-eight".