11520732755 has 24 divisors (see below), whose sum is σ = 16088829120. Its totient is φ = 7896577920.

The previous prime is 11520732701. The next prime is 11520732757. The reversal of 11520732755 is 55723702511.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-11520732755 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11520732757) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 659990 + ... + 677220.

It is an arithmetic number, because the mean of its divisors is an integer number (670367880).

Almost surely, 2^11520732755 is an apocalyptic number.

11520732755 is a deficient number, since it is larger than the sum of its proper divisors (4568096365).

11520732755 is a wasteful number, since it uses less digits than its factorization.

11520732755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19979 (or 19972 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 38.

The spelling of 11520732755 in words is "eleven billion, five hundred twenty million, seven hundred thirty-two thousand, seven hundred fifty-five".