12612617140 has 12 divisors (see below), whose sum is σ = 26486496036. Its totient is φ = 5045046848.

The previous prime is 12612617093. The next prime is 12612617161. The reversal of 12612617140 is 4171621621.

It can be written as a sum of positive squares in 2 ways, for example, as 4118045584 + 8494571556 = 64172^2 + 92166^2 .

It is a super-2 number, since 2×12612617140² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 315315409 + ... + 315315448.

It is an arithmetic number, because the mean of its divisors is an integer number (2207208003).

Almost surely, 2^12612617140 is an apocalyptic number.

12612617140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12612617140 is an abundant number, since it is smaller than the sum of its proper divisors (13873878896).

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

12612617140 is a wasteful number, since it uses less digits than its factorization.

12612617140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630630866 (or 630630864 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The spelling of 12612617140 in words is "twelve billion, six hundred twelve million, six hundred seventeen thousand, one hundred forty".