15255648979 has 8 divisors (see below), whose sum is σ = 15752973312. Its totient is φ = 14758650120.

The previous prime is 15255648973. The next prime is 15255648983. The reversal of 15255648979 is 97984655251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15255648979 - 2³ = 15255648971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15255648971) 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, 15762 + ... + 175384.

It is an arithmetic number, because the mean of its divisors is an integer number (1969121664).

Almost surely, 2^15255648979 is an apocalyptic number.

15255648979 is a deficient number, since it is larger than the sum of its proper divisors (497324333).

15255648979 is a wasteful number, since it uses less digits than its factorization.

15255648979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162737.

The product of its digits is 27216000, while the sum is 61.

The spelling of 15255648979 in words is "fifteen billion, two hundred fifty-five million, six hundred forty-eight thousand, nine hundred seventy-nine".