11157323305 has 32 divisors (see below), whose sum is σ = 14184529920. Its totient is φ = 8411739840.

The previous prime is 11157323293. The next prime is 11157323321. The reversal of 11157323305 is 50332375111.

It is a happy number.

It is not a de Polignac number, because 11157323305 - 2²¹ = 11155226153 is a prime.

It is a super-2 number, since 2×11157323305² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2390404 + ... + 2395066.

It is an arithmetic number, because the mean of its divisors is an integer number (443266560).

Almost surely, 2^11157323305 is an apocalyptic number.

It is an amenable number.

11157323305 is a deficient number, since it is larger than the sum of its proper divisors (3027206615).

11157323305 is a wasteful number, since it uses less digits than its factorization.

11157323305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5101.

The product of its (nonzero) digits is 9450, while the sum is 31.

Adding to 11157323305 its reverse (50332375111), we get a palindrome (61489698416).

The spelling of 11157323305 in words is "eleven billion, one hundred fifty-seven million, three hundred twenty-three thousand, three hundred five".