12187596616 has 32 divisors (see below), whose sum is σ = 26057195640. Its totient is φ = 5294158848.

The previous prime is 12187596601. The next prime is 12187596623. The reversal of 12187596616 is 61669578121.

It can be written as a sum of positive squares in 4 ways, for example, as 9791102500 + 2396494116 = 98950^2 + 48954^2 .

It is a super-2 number, since 2×12187596616² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3444951 + ... + 3448486.

Almost surely, 2^12187596616 is an apocalyptic number.

It is an amenable number.

12187596616 is an abundant number, since it is smaller than the sum of its proper divisors (13869599024).

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

12187596616 is a wasteful number, since it uses less digits than its factorization.

12187596616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6893473 (or 6893469 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 52.

The spelling of 12187596616 in words is "twelve billion, one hundred eighty-seven million, five hundred ninety-six thousand, six hundred sixteen".