23211115115553 has 12 divisors (see below), whose sum is σ = 33537706139028. Its totient is φ = 15469212192480.

The previous prime is 23211115115491. The next prime is 23211115115557. The reversal of 23211115115553 is 35551151111232.

23211115115553 is a `hidden beast` number, since 2 + 3 + 21 + 111 + 511 + 5 + 5 + 5 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3165150553569 + 20045964561984 = 1779087^2 + 4477272^2 .

It is not a de Polignac number, because 23211115115553 - 2⁸ = 23211115115297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23211115115557) 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 11 ways as a sum of consecutive naturals, for example, 405349050 + ... + 405406307.

It is an arithmetic number, because the mean of its divisors is an integer number (2794808844919).

Almost surely, 2^{23211115115553} is an apocalyptic number.

It is an amenable number.

23211115115553 is a deficient number, since it is larger than the sum of its proper divisors (10326591023475).

23211115115553 is a wasteful number, since it uses less digits than its factorization.

23211115115553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810758544 (or 810758541 counting only the distinct ones).

The product of its digits is 22500, while the sum is 36.

Adding to 23211115115553 its reverse (35551151111232), we get a palindrome (58762266226785).

The spelling of 23211115115553 in words is "twenty-three trillion, two hundred eleven billion, one hundred fifteen million, one hundred fifteen thousand, five hundred fifty-three".