102515932123 has 16 divisors (see below), whose sum is σ = 112210132320. Its totient is φ = 92884377600.

The previous prime is 102515932109. The next prime is 102515932157. The reversal of 102515932123 is 321239515201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102515932123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102515932193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18565603 + ... + 18571123.

It is an arithmetic number, because the mean of its divisors is an integer number (7013133270).

Almost surely, 2^102515932123 is an apocalyptic number.

102515932123 is a deficient number, since it is larger than the sum of its proper divisors (9694200197).

102515932123 is a wasteful number, since it uses less digits than its factorization.

102515932123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10878.

The product of its (nonzero) digits is 16200, while the sum is 34.

The spelling of 102515932123 in words is "one hundred two billion, five hundred fifteen million, nine hundred thirty-two thousand, one hundred twenty-three".