11721575254 has 16 divisors (see below), whose sum is σ = 17853853248. Its totient is φ = 5770904832.

The previous prime is 11721575251. The next prime is 11721575263. The reversal of 11721575254 is 45257512711.

11721575254 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11721575251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115134 + ... + 191569.

It is an arithmetic number, because the mean of its divisors is an integer number (1115865828).

Almost surely, 2^11721575254 is an apocalyptic number.

11721575254 is a deficient number, since it is larger than the sum of its proper divisors (6132277994).

11721575254 is a wasteful number, since it uses less digits than its factorization.

11721575254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306999.

The product of its digits is 98000, while the sum is 40.

The spelling of 11721575254 in words is "eleven billion, seven hundred twenty-one million, five hundred seventy-five thousand, two hundred fifty-four".