12612425155521 has 8 divisors (see below), whose sum is σ = 16867372213344. Its totient is φ = 8382880767360.

The previous prime is 12612425155493. The next prime is 12612425155523. The reversal of 12612425155521 is 12555152421621.

12612425155521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12612425155521 - 2²⁶ = 12612358046657 is a prime.

It is a super-3 number, since 3×12612425155521³ (a number of 40 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12612425155523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6350666256 + ... + 6350668241.

It is an arithmetic number, because the mean of its divisors is an integer number (2108421526668).

Almost surely, 2^{12612425155521} is an apocalyptic number.

It is an amenable number.

12612425155521 is a deficient number, since it is larger than the sum of its proper divisors (4254947057823).

12612425155521 is a wasteful number, since it uses less digits than its factorization.

12612425155521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12701334831.

The product of its digits is 240000, while the sum is 42.

The spelling of 12612425155521 in words is "twelve trillion, six hundred twelve billion, four hundred twenty-five million, one hundred fifty-five thousand, five hundred twenty-one".