11554505363231 has 4 divisors (see below), whose sum is σ = 11588791729632. Its totient is φ = 11520218996832.

The previous prime is 11554505363183. The next prime is 11554505363287. The reversal of 11554505363231 is 13236350545511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11554505363231 - 2²² = 11554501168927 is a prime.

It is a super-2 number, since 2×11554505363231² (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 (11554505363831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17143182695 + ... + 17143183368.

It is an arithmetic number, because the mean of its divisors is an integer number (2897197932408).

Almost surely, 2^{11554505363231} is an apocalyptic number.

11554505363231 is a deficient number, since it is larger than the sum of its proper divisors (34286366401).

11554505363231 is an equidigital number, since it uses as much as digits as its factorization.

11554505363231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34286366400.

The product of its (nonzero) digits is 810000, while the sum is 44.

The spelling of 11554505363231 in words is "eleven trillion, five hundred fifty-four billion, five hundred five million, three hundred sixty-three thousand, two hundred thirty-one".