102164439685 has 24 divisors (see below), whose sum is σ = 155578059936. Its totient is φ = 63686921760.

The previous prime is 102164439673. The next prime is 102164439719. The reversal of 102164439685 is 586934461201.

It is not a de Polignac number, because 102164439685 - 2⁵ = 102164439653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian 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 23 ways as a sum of consecutive naturals, for example, 18951747 + ... + 18957136.

It is an arithmetic number, because the mean of its divisors is an integer number (6482419164).

Almost surely, 2^102164439685 is an apocalyptic number.

It is an amenable number.

102164439685 is a deficient number, since it is larger than the sum of its proper divisors (53413620251).

102164439685 is a wasteful number, since it uses less digits than its factorization.

102164439685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37908913 (or 37908906 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 102164439685 in words is "one hundred two billion, one hundred sixty-four million, four hundred thirty-nine thousand, six hundred eighty-five".