149572391631 has 16 divisors (see below), whose sum is σ = 215013891456. Its totient is φ = 91940286816.

The previous prime is 149572391611. The next prime is 149572391651. The reversal of 149572391631 is 136193275941.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (149572391611) and next prime (149572391651).

It is not a de Polignac number, because 149572391631 - 2⁹ = 149572391119 is a prime.

It is a super-2 number, since 2×149572391631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149572391611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2137245 + ... + 2206118.

It is an arithmetic number, because the mean of its divisors is an integer number (13438368216).

Almost surely, 2^149572391631 is an apocalyptic number.

149572391631 is a deficient number, since it is larger than the sum of its proper divisors (65441499825).

149572391631 is a wasteful number, since it uses less digits than its factorization.

149572391631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4344262.

The product of its digits is 1224720, while the sum is 51.

The spelling of 149572391631 in words is "one hundred forty-nine billion, five hundred seventy-two million, three hundred ninety-one thousand, six hundred thirty-one".