15256081478 has 24 divisors (see below), whose sum is σ = 25173829296. Its totient is φ = 6929011760.

The previous prime is 15256081453. The next prime is 15256081481. The reversal of 15256081478 is 87418065251.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 284351 + ... + 333717.

It is an arithmetic number, because the mean of its divisors is an integer number (1048909554).

Almost surely, 2^15256081478 is an apocalyptic number.

15256081478 is a deficient number, since it is larger than the sum of its proper divisors (9917747818).

15256081478 is a wasteful number, since it uses less digits than its factorization.

15256081478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50668 (or 50657 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 47.

The spelling of 15256081478 in words is "fifteen billion, two hundred fifty-six million, eighty-one thousand, four hundred seventy-eight".