15272878655 has 16 divisors (see below), whose sum is σ = 19321196544. Its totient is φ = 11572580640.

The previous prime is 15272878651. The next prime is 15272878667. The reversal of 15272878655 is 55687827251.

It is not a de Polignac number, because 15272878655 - 2² = 15272878651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15272878655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15272878651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1040957 + ... + 1055526.

It is an arithmetic number, because the mean of its divisors is an integer number (1207574784).

Almost surely, 2^15272878655 is an apocalyptic number.

15272878655 is a deficient number, since it is larger than the sum of its proper divisors (4048317889).

15272878655 is a wasteful number, since it uses less digits than its factorization.

15272878655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096566.

The product of its digits is 9408000, while the sum is 56.

The spelling of 15272878655 in words is "fifteen billion, two hundred seventy-two million, eight hundred seventy-eight thousand, six hundred fifty-five".