21150023041255 has 32 divisors (see below), whose sum is σ = 26601114355200. Its totient is φ = 16112553072000.

The previous prime is 21150023041223. The next prime is 21150023041267. The reversal of 21150023041255 is 55214032005112.

It is not a de Polignac number, because 21150023041255 - 2⁵ = 21150023041223 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63712696 + ... + 64043794.

It is an arithmetic number, because the mean of its divisors is an integer number (831284823600).

Almost surely, 2^{21150023041255} is an apocalyptic number.

21150023041255 is a deficient number, since it is larger than the sum of its proper divisors (5451091313945).

21150023041255 is a wasteful number, since it uses less digits than its factorization.

21150023041255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333591.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 21150023041255 its reverse (55214032005112), we get a palindrome (76364055046367).

The spelling of 21150023041255 in words is "twenty-one trillion, one hundred fifty billion, twenty-three million, forty-one thousand, two hundred fifty-five".