102139516685985 has 32 divisors (see below), whose sum is σ = 166242155760000. Its totient is φ = 53535310811136.

The previous prime is 102139516685951. The next prime is 102139516686023. The reversal of 102139516685985 is 589586615931201.

It is not a de Polignac number, because 102139516685985 - 2¹² = 102139516681889 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14028160 + ... + 20026689.

It is an arithmetic number, because the mean of its divisors is an integer number (5195067367500).

Almost surely, 2^{102139516685985} is an apocalyptic number.

102139516685985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102139516685985 is a deficient number, since it is larger than the sum of its proper divisors (64102639074015).

102139516685985 is a wasteful number, since it uses less digits than its factorization.

102139516685985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34058305.

The product of its (nonzero) digits is 139968000, while the sum is 69.

The spelling of 102139516685985 in words is "one hundred two trillion, one hundred thirty-nine billion, five hundred sixteen million, six hundred eighty-five thousand, nine hundred eighty-five".