11551556660412 has 48 divisors (see below), whose sum is σ = 26962636377600. Its totient is φ = 3849232833600.

The previous prime is 11551556660393. The next prime is 11551556660419. The reversal of 11551556660412 is 21406665515511.

11551556660412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11551556660412² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551556660419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 795609289 + ... + 795623807.

It is an arithmetic number, because the mean of its divisors is an integer number (561721591200).

Almost surely, 2^{11551556660412} is an apocalyptic number.

11551556660412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11551556660412 is an abundant number, since it is smaller than the sum of its proper divisors (15411079717188).

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

11551556660412 is a wasteful number, since it uses less digits than its factorization.

11551556660412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32106 (or 32104 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 48.

The spelling of 11551556660412 in words is "eleven trillion, five hundred fifty-one billion, five hundred fifty-six million, six hundred sixty thousand, four hundred twelve".