15239838648 has 32 divisors (see below), whose sum is σ = 38133772560. Its totient is φ = 5075389440.

The previous prime is 15239838643. The next prime is 15239838659. The reversal of 15239838648 is 84683893251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15239838643) 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, 257433 + ... + 311048.

Almost surely, 2^15239838648 is an apocalyptic number.

It is an amenable number.

15239838648 is an abundant number, since it is smaller than the sum of its proper divisors (22893933912).

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

15239838648 is a wasteful number, since it uses less digits than its factorization.

15239838648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569607 (or 569603 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 57.

The spelling of 15239838648 in words is "fifteen billion, two hundred thirty-nine million, eight hundred thirty-eight thousand, six hundred forty-eight".