253605646463 has 24 divisors (see below), whose sum is σ = 277484803200. Its totient is φ = 231656091264.

The previous prime is 253605646453. The next prime is 253605646487. The reversal of 253605646463 is 364646506352.

It is not a de Polignac number, because 253605646463 - 2²⁰ = 253604597887 is a prime.

It is a super-2 number, since 2×253605646463² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253605646453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15262706 + ... + 15279312.

It is an arithmetic number, because the mean of its divisors is an integer number (11561866800).

Almost surely, 2^253605646463 is an apocalyptic number.

253605646463 is a deficient number, since it is larger than the sum of its proper divisors (23879156737).

253605646463 is a wasteful number, since it uses less digits than its factorization.

253605646463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17571 (or 17558 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 50.

The spelling of 253605646463 in words is "two hundred fifty-three billion, six hundred five million, six hundred forty-six thousand, four hundred sixty-three".