21433035451255 has 16 divisors (see below), whose sum is σ = 25803110361600. Its totient is φ = 17090786432160.

The previous prime is 21433035451241. The next prime is 21433035451337. The reversal of 21433035451255 is 55215453033412.

It is not a de Polignac number, because 21433035451255 - 2⁴³ = 12636942429047 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57222376 + ... + 57595714.

It is an arithmetic number, because the mean of its divisors is an integer number (1612694397600).

Almost surely, 2^{21433035451255} is an apocalyptic number.

21433035451255 is a deficient number, since it is larger than the sum of its proper divisors (4370074910345).

21433035451255 is a wasteful number, since it uses less digits than its factorization.

21433035451255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410574.

The product of its (nonzero) digits is 1080000, while the sum is 43.

Adding to 21433035451255 its reverse (55215453033412), we get a palindrome (76648488484667).

The spelling of 21433035451255 in words is "twenty-one trillion, four hundred thirty-three billion, thirty-five million, four hundred fifty-one thousand, two hundred fifty-five".