15745871457 has 12 divisors (see below), whose sum is σ = 22791525120. Its totient is φ = 10475329848.

The previous prime is 15745871431. The next prime is 15745871459. The reversal of 15745871457 is 75417854751.

It is a happy number.

15745871457 is a `hidden beast` number, since 1 + 5 + 7 + 4 + 587 + 1 + 4 + 57 = 666.

It is not a de Polignac number, because 15745871457 - 2³¹ = 13598387809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15745871459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1821933 + ... + 1830554.

It is an arithmetic number, because the mean of its divisors is an integer number (1899293760).

Almost surely, 2^15745871457 is an apocalyptic number.

It is an amenable number.

15745871457 is a deficient number, since it is larger than the sum of its proper divisors (7045653663).

15745871457 is a wasteful number, since it uses less digits than its factorization.

15745871457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3652972 (or 3652969 counting only the distinct ones).

The product of its digits is 5488000, while the sum is 54.

The spelling of 15745871457 in words is "fifteen billion, seven hundred forty-five million, eight hundred seventy-one thousand, four hundred fifty-seven".