11556194013 has 24 divisors (see below), whose sum is σ = 20544346368. Its totient is φ = 6095574432.

The previous prime is 11556194011. The next prime is 11556194033. The reversal of 11556194013 is 31049165511.

11556194013 is a `hidden beast` number, since 1 + 1 + 5 + 561 + 94 + 0 + 1 + 3 = 666.

It is not a de Polignac number, because 11556194013 - 2¹ = 11556194011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11556194011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7054245 + ... + 7055882.

It is an arithmetic number, because the mean of its divisors is an integer number (856014432).

Almost surely, 2^11556194013 is an apocalyptic number.

11556194013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11556194013 is a deficient number, since it is larger than the sum of its proper divisors (8988152355).

11556194013 is a wasteful number, since it uses less digits than its factorization.

11556194013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14110153 (or 14110150 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The spelling of 11556194013 in words is "eleven billion, five hundred fifty-six million, one hundred ninety-four thousand, thirteen".