102400902502505 has 16 divisors (see below), whose sum is σ = 122924859932160. Its totient is φ = 81891539020032.

The previous prime is 102400902502487. The next prime is 102400902502511. The reversal of 102400902502505 is 505205209004201.

It is a cyclic number.

It is not a de Polignac number, because 102400902502505 - 2²² = 102400898308201 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 640570376 + ... + 640730214.

It is an arithmetic number, because the mean of its divisors is an integer number (7682803745760).

Almost surely, 2^{102400902502505} is an apocalyptic number.

It is an amenable number.

102400902502505 is a deficient number, since it is larger than the sum of its proper divisors (20523957429655).

102400902502505 is a wasteful number, since it uses less digits than its factorization.

102400902502505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204688.

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 102400902502505 in words is "one hundred two trillion, four hundred billion, nine hundred two million, five hundred two thousand, five hundred five".