11157831666281 has 16 divisors (see below), whose sum is σ = 12238676840448. Its totient is φ = 10126564492800.

The previous prime is 11157831666253. The next prime is 11157831666307. The reversal of 11157831666281 is 18266613875111.

11157831666281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11157831666281 - 2⁶ = 11157831666217 is a prime.

It is a super-2 number, since 2×11157831666281² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11157831666211) 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, 37525145 + ... + 37821318.

It is an arithmetic number, because the mean of its divisors is an integer number (764917302528).

Almost surely, 2^{11157831666281} is an apocalyptic number.

It is an amenable number.

11157831666281 is a deficient number, since it is larger than the sum of its proper divisors (1080845174167).

11157831666281 is a wasteful number, since it uses less digits than its factorization.

11157831666281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75346792.

The product of its digits is 2903040, while the sum is 56.

The spelling of 11157831666281 in words is "eleven trillion, one hundred fifty-seven billion, eight hundred thirty-one million, six hundred sixty-six thousand, two hundred eighty-one".