11556616630511 has 8 divisors (see below), whose sum is σ = 11779281844704. Its totient is φ = 11334122373600.

The previous prime is 11556616630451. The next prime is 11556616630541. The reversal of 11556616630511 is 11503661665511.

11556616630511 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11556616630511 is a prime.

It is a super-2 number, since 2×11556616630511² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11556616630541) 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, 42602816 + ... + 42873221.

It is an arithmetic number, because the mean of its divisors is an integer number (1472410230588).

Almost surely, 2^{11556616630511} is an apocalyptic number.

11556616630511 is a deficient number, since it is larger than the sum of its proper divisors (222665214193).

11556616630511 is an equidigital number, since it uses as much as digits as its factorization.

11556616630511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85478641.

The product of its (nonzero) digits is 486000, while the sum is 47.

The spelling of 11556616630511 in words is "eleven trillion, five hundred fifty-six billion, six hundred sixteen million, six hundred thirty thousand, five hundred eleven".