15250633640 has 32 divisors (see below), whose sum is σ = 37433374560. Its totient is φ = 5545684800.

The previous prime is 15250633639. The next prime is 15250633661. The reversal of 15250633640 is 4633605251.

It is a self number, because there is not a number n which added to its sum of digits gives 15250633640.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17329826 + ... + 17330705.

It is an arithmetic number, because the mean of its divisors is an integer number (1169792955).

Almost surely, 2^15250633640 is an apocalyptic number.

15250633640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15250633640 is an abundant number, since it is smaller than the sum of its proper divisors (22182740920).

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

15250633640 is a wasteful number, since it uses less digits than its factorization.

15250633640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34660553 (or 34660549 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

The spelling of 15250633640 in words is "fifteen billion, two hundred fifty million, six hundred thirty-three thousand, six hundred forty".