102581134785 has 24 divisors (see below), whose sum is σ = 177990493824. Its totient is φ = 54653571360.

The previous prime is 102581134769. The next prime is 102581134853. The reversal of 102581134785 is 587431185201.

102581134785 is a `hidden beast` number, since 10 + 2 + 58 + 113 + 478 + 5 = 666.

It is not a de Polignac number, because 102581134785 - 2⁴ = 102581134769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 102581134785.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1130137 + ... + 1217526.

It is an arithmetic number, because the mean of its divisors is an integer number (7416270576).

Almost surely, 2^102581134785 is an apocalyptic number.

102581134785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102581134785 is a deficient number, since it is larger than the sum of its proper divisors (75409359039).

102581134785 is a wasteful number, since it uses less digits than its factorization.

102581134785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348645 (or 2348642 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 45.

The spelling of 102581134785 in words is "one hundred two billion, five hundred eighty-one million, one hundred thirty-four thousand, seven hundred eighty-five".