102123657816 has 32 divisors (see below), whose sum is σ = 255317346240. Its totient is φ = 34040125728.

The previous prime is 102123657773. The next prime is 102123657877. The reversal of 102123657816 is 618756321201.

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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1106355 + ... + 1195101.

It is an arithmetic number, because the mean of its divisors is an integer number (7978667070).

Almost surely, 2^102123657816 is an apocalyptic number.

It is an amenable number.

102123657816 is an abundant number, since it is smaller than the sum of its proper divisors (153193688424).

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

102123657816 is a wasteful number, since it uses less digits than its factorization.

102123657816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136703 (or 136699 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 102123657816 in words is "one hundred two billion, one hundred twenty-three million, six hundred fifty-seven thousand, eight hundred sixteen".