15254139408 has 20 divisors (see below), whose sum is σ = 39406526928. Its totient is φ = 5084713120.

The previous prime is 15254139347. The next prime is 15254139409. The reversal of 15254139408 is 80493145251.

It is a self number, because there is not a number n which added to its sum of digits gives 15254139408.

It is not an unprimeable number, because it can be changed into a prime (15254139409) 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, 158897238 + ... + 158897333.

Almost surely, 2^15254139408 is an apocalyptic number.

It is an amenable number.

15254139408 is an abundant number, since it is smaller than the sum of its proper divisors (24152387520).

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

15254139408 is a wasteful number, since it uses less digits than its factorization.

15254139408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317794582 (or 317794576 counting only the distinct ones).

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

The spelling of 15254139408 in words is "fifteen billion, two hundred fifty-four million, one hundred thirty-nine thousand, four hundred eight".