15795015640 has 16 divisors (see below), whose sum is σ = 35538785280. Its totient is φ = 6318006240.

The previous prime is 15795015617. The next prime is 15795015641. The reversal of 15795015640 is 4651059751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15795015641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197437656 + ... + 197437735.

It is an arithmetic number, because the mean of its divisors is an integer number (2221174080).

Almost surely, 2^15795015640 is an apocalyptic number.

15795015640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15795015640 is an abundant number, since it is smaller than the sum of its proper divisors (19743769640).

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

15795015640 is a wasteful number, since it uses less digits than its factorization.

15795015640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394875402 (or 394875398 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 43.

The spelling of 15795015640 in words is "fifteen billion, seven hundred ninety-five million, fifteen thousand, six hundred forty".