102005115102 has 64 divisors (see below), whose sum is σ = 250768120320. Its totient is φ = 30475267200.

The previous prime is 102005115083. The next prime is 102005115109. The reversal of 102005115102 is 201511500201.

102005115102 is a `hidden beast` number, since 102 + 0 + 0 + 51 + 1 + 510 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102005115109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1167163 + ... + 1251510.

It is an arithmetic number, because the mean of its divisors is an integer number (3918251880).

Almost surely, 2^102005115102 is an apocalyptic number.

102005115102 is an abundant number, since it is smaller than the sum of its proper divisors (148763005218).

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

102005115102 is a wasteful number, since it uses less digits than its factorization.

102005115102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418766 (or 2418760 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

Adding to 102005115102 its reverse (201511500201), we get a palindrome (303516615303).

The spelling of 102005115102 in words is "one hundred two billion, five million, one hundred fifteen thousand, one hundred two".