253444117511 has 16 divisors (see below), whose sum is σ = 286252553664. Its totient is φ = 222640771584.

The previous prime is 253444117499. The next prime is 253444117519. The reversal of 253444117511 is 115711444352.

It is a cyclic number.

It is not a de Polignac number, because 253444117511 - 2¹⁸ = 253443855367 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 (253444117519) 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, 2092466 + ... + 2210271.

It is an arithmetic number, because the mean of its divisors is an integer number (17890784604).

Almost surely, 2^253444117511 is an apocalyptic number.

253444117511 is a deficient number, since it is larger than the sum of its proper divisors (32808436153).

253444117511 is a wasteful number, since it uses less digits than its factorization.

253444117511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4302970.

The product of its digits is 67200, while the sum is 38.

The spelling of 253444117511 in words is "two hundred fifty-three billion, four hundred forty-four million, one hundred seventeen thousand, five hundred eleven".