11155113315 has 32 divisors (see below), whose sum is σ = 20471040000. Its totient is φ = 5757475680.

The previous prime is 11155113311. The next prime is 11155113317. The reversal of 11155113315 is 51331155111.

11155113315 is a `hidden beast` number, since 1 + 115 + 511 + 3 + 31 + 5 = 666.

It is not a de Polignac number, because 11155113315 - 2² = 11155113311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (11155113311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1328565 + ... + 1336934.

It is an arithmetic number, because the mean of its divisors is an integer number (639720000).

Almost surely, 2^11155113315 is an apocalyptic number.

11155113315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11155113315 is a deficient number, since it is larger than the sum of its proper divisors (9315926685).

11155113315 is a wasteful number, since it uses less digits than its factorization.

11155113315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665544 (or 2665538 counting only the distinct ones).

The product of its digits is 1125, while the sum is 27.

Adding to 11155113315 its reverse (51331155111), we get a palindrome (62486268426).

The spelling of 11155113315 in words is "eleven billion, one hundred fifty-five million, one hundred thirteen thousand, three hundred fifteen".