11157831731816 has 128 divisors (see below), whose sum is σ = 27624014496000. Its totient is φ = 4090531614720.

The previous prime is 11157831731791. The next prime is 11157831731819. The reversal of 11157831731816 is 61813713875111.

It is not an unprimeable number, because it can be changed into a prime (11157831731819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45420230 + ... + 45665226.

It is an arithmetic number, because the mean of its divisors is an integer number (215812613250).

Almost surely, 2^{11157831731816} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11157831731816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13812007248000).

11157831731816 is an abundant number, since it is smaller than the sum of its proper divisors (16466182764184).

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

11157831731816 is a wasteful number, since it uses less digits than its factorization.

11157831731816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249387 (or 249383 counting only the distinct ones).

The product of its digits is 846720, while the sum is 53.

The spelling of 11157831731816 in words is "eleven trillion, one hundred fifty-seven billion, eight hundred thirty-one million, seven hundred thirty-one thousand, eight hundred sixteen".