253411133021 has 16 divisors (see below), whose sum is σ = 255451286400. Its totient is φ = 251380039680.

The previous prime is 253411133011. The next prime is 253411133047. The reversal of 253411133021 is 120331114352.

It is a cyclic number.

It is not a de Polignac number, because 253411133021 - 2²² = 253406938717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253411133011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147074666 + ... + 147076388.

It is an arithmetic number, because the mean of its divisors is an integer number (15965705400).

Almost surely, 2^253411133021 is an apocalyptic number.

It is an amenable number.

253411133021 is a deficient number, since it is larger than the sum of its proper divisors (2040153379).

253411133021 is a wasteful number, since it uses less digits than its factorization.

253411133021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3716.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 253411133021 its reverse (120331114352), we get a palindrome (373742247373).

The spelling of 253411133021 in words is "two hundred fifty-three billion, four hundred eleven million, one hundred thirty-three thousand, twenty-one".