12149597532 has 48 divisors (see below), whose sum is σ = 28779190272. Its totient is φ = 3988541760.

The previous prime is 12149597513. The next prime is 12149597543. The reversal of 12149597532 is 23579594121.

It is a super-2 number, since 2×12149597532² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 842293 + ... + 856595.

It is an arithmetic number, because the mean of its divisors is an integer number (599566464).

Almost surely, 2^12149597532 is an apocalyptic number.

12149597532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12149597532 is an abundant number, since it is smaller than the sum of its proper divisors (16629592740).

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

12149597532 is a wasteful number, since it uses less digits than its factorization.

12149597532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15378 (or 15376 counting only the distinct ones).

The product of its digits is 680400, while the sum is 48.

The spelling of 12149597532 in words is "twelve billion, one hundred forty-nine million, five hundred ninety-seven thousand, five hundred thirty-two".