815380653102 has 16 divisors (see below), whose sum is σ = 1631366894160. Its totient is φ = 271692619712.

The previous prime is 815380653053. The next prime is 815380653107. The reversal of 815380653102 is 201356083518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815380653107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25215327 + ... + 25247642.

It is an arithmetic number, because the mean of its divisors is an integer number (101960430885).

Almost surely, 2^815380653102 is an apocalyptic number.

815380653102 is an abundant number, since it is smaller than the sum of its proper divisors (815986241058).

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

815380653102 is a wasteful number, since it uses less digits than its factorization.

815380653102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50465667.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 815380653102 in words is "eight hundred fifteen billion, three hundred eighty million, six hundred fifty-three thousand, one hundred two".