11520364155 has 16 divisors (see below), whose sum is σ = 18461264640. Its totient is φ = 6134633568.

The previous prime is 11520364153. The next prime is 11520364171. The reversal of 11520364155 is 55146302511.

It is not a de Polignac number, because 11520364155 - 2¹ = 11520364153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11520364151) 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, 587575 + ... + 606864.

It is an arithmetic number, because the mean of its divisors is an integer number (1153829040).

Almost surely, 2^11520364155 is an apocalyptic number.

11520364155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11520364155 is a deficient number, since it is larger than the sum of its proper divisors (6940900485).

11520364155 is a wasteful number, since it uses less digits than its factorization.

11520364155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195090.

The product of its (nonzero) digits is 18000, while the sum is 33.

Adding to 11520364155 its reverse (55146302511), we get a palindrome (66666666666).

The spelling of 11520364155 in words is "eleven billion, five hundred twenty million, three hundred sixty-four thousand, one hundred fifty-five".