12612112511 has 8 divisors (see below), whose sum is σ = 12865773024. Its totient is φ = 12359033440.

The previous prime is 12612112489. The next prime is 12612112517. The reversal of 12612112511 is 11521121621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12612112511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12612112517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101411 + ... + 188436.

It is an arithmetic number, because the mean of its divisors is an integer number (1608221628).

Almost surely, 2^12612112511 is an apocalyptic number.

12612112511 is a deficient number, since it is larger than the sum of its proper divisors (253660513).

12612112511 is an equidigital number, since it uses as much as digits as its factorization.

12612112511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290721.

The product of its digits is 240, while the sum is 23.

The spelling of 12612112511 in words is "twelve billion, six hundred twelve million, one hundred twelve thousand, five hundred eleven".