15012785457 has 32 divisors (see below), whose sum is σ = 23795600000. Its totient is φ = 9326301120.

The previous prime is 15012785441. The next prime is 15012785479. The reversal of 15012785457 is 75458721051.

15012785457 is a `hidden beast` number, since 1 + 501 + 27 + 85 + 45 + 7 = 666.

It is not a de Polignac number, because 15012785457 - 2⁴ = 15012785441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15012785407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208582 + ... + 271167.

It is an arithmetic number, because the mean of its divisors is an integer number (743612500).

Almost surely, 2^15012785457 is an apocalyptic number.

It is an amenable number.

15012785457 is a deficient number, since it is larger than the sum of its proper divisors (8782814543).

15012785457 is a wasteful number, since it uses less digits than its factorization.

15012785457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479838 (or 479832 counting only the distinct ones).

The product of its (nonzero) digits is 392000, while the sum is 45.

The spelling of 15012785457 in words is "fifteen billion, twelve million, seven hundred eighty-five thousand, four hundred fifty-seven".