15237705213 has 12 divisors (see below), whose sum is σ = 22065464668. Its totient is φ = 10132879680.

The previous prime is 15237705169. The next prime is 15237705221. The reversal of 15237705213 is 31250773251.

It is a happy number.

15237705213 is a `hidden beast` number, since 1 + 523 + 7 + 70 + 52 + 13 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4414007844 + 10823697369 = 66438^2 + 104037^2 .

It is not a de Polignac number, because 15237705213 - 2⁸ = 15237704957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15237705713) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2128768 + ... + 2135913.

Almost surely, 2^15237705213 is an apocalyptic number.

It is an amenable number.

15237705213 is a deficient number, since it is larger than the sum of its proper divisors (6827759455).

15237705213 is a wasteful number, since it uses less digits than its factorization.

15237705213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4265084 (or 4265081 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 36.

The spelling of 15237705213 in words is "fifteen billion, two hundred thirty-seven million, seven hundred five thousand, two hundred thirteen".