15474993131 has 32 divisors (see below), whose sum is σ = 17296527360. Its totient is φ = 13754841984.

The previous prime is 15474993113. The next prime is 15474993143. The reversal of 15474993131 is 13139947451.

It is not a de Polignac number, because 15474993131 - 2¹⁴ = 15474976747 is a prime.

It is a super-2 number, since 2×15474993131² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15474993151) 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, 25244381 + ... + 25244993.

It is an arithmetic number, because the mean of its divisors is an integer number (540516480).

Almost surely, 2^15474993131 is an apocalyptic number.

15474993131 is a deficient number, since it is larger than the sum of its proper divisors (1821534229).

15474993131 is a wasteful number, since it uses less digits than its factorization.

15474993131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275.

The product of its digits is 408240, while the sum is 47.

The spelling of 15474993131 in words is "fifteen billion, four hundred seventy-four million, nine hundred ninety-three thousand, one hundred thirty-one".