253511540531203 has 32 divisors (see below), whose sum is σ = 294859276185600. Its totient is φ = 216196602817536.

The previous prime is 253511540531149. The next prime is 253511540531231. The reversal of 253511540531203 is 302135045115352.

It is not a de Polignac number, because 253511540531203 - 2²¹ = 253511538434051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253511540531233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94955775 + ... + 97589047.

It is an arithmetic number, because the mean of its divisors is an integer number (9214352380800).

Almost surely, 2^{253511540531203} is an apocalyptic number.

253511540531203 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

253511540531203 is a deficient number, since it is larger than the sum of its proper divisors (41347735654397).

253511540531203 is a wasteful number, since it uses less digits than its factorization.

253511540531203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2646291.

The product of its (nonzero) digits is 270000, while the sum is 40.

Adding to 253511540531203 its reverse (302135045115352), we get a palindrome (555646585646555).

The spelling of 253511540531203 in words is "two hundred fifty-three trillion, five hundred eleven billion, five hundred forty million, five hundred thirty-one thousand, two hundred three".