15131422660 has 24 divisors (see below), whose sum is σ = 31866019416. Its totient is φ = 6035420160.

The previous prime is 15131422627. The next prime is 15131422681. The reversal of 15131422660 is 6622413151.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 317124864 + 14814297796 = 17808^2 + 121714^2 .

It is a super-2 number, since 2×15131422660² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1064571 + ... + 1078690.

It is an arithmetic number, because the mean of its divisors is an integer number (1327750809).

Almost surely, 2^15131422660 is an apocalyptic number.

15131422660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15131422660 is an abundant number, since it is smaller than the sum of its proper divisors (16734596756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15131422660 is a wasteful number, since it uses less digits than its factorization.

15131422660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143623 (or 2143621 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 15131422660 in words is "fifteen billion, one hundred thirty-one million, four hundred twenty-two thousand, six hundred sixty".