11566144001356 has 48 divisors (see below), whose sum is σ = 24384513404160. Its totient is φ = 4689329198400.

The previous prime is 11566144001333. The next prime is 11566144001371. The reversal of 11566144001356 is 65310044166511.

It is a happy number.

It is a super-3 number, since 3×11566144001356³ (a number of 40 digits) contains 333 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 15134110 + ... + 15879973.

It is an arithmetic number, because the mean of its divisors is an integer number (508010695920).

Almost surely, 2^{11566144001356} is an apocalyptic number.

It is an amenable number.

11566144001356 is an abundant number, since it is smaller than the sum of its proper divisors (12818369402804).

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

11566144001356 is a wasteful number, since it uses less digits than its factorization.

11566144001356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31014814 (or 31014812 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 43.

Adding to 11566144001356 its reverse (65310044166511), we get a palindrome (76876188167867).

The spelling of 11566144001356 in words is "eleven trillion, five hundred sixty-six billion, one hundred forty-four million, one thousand, three hundred fifty-six".