253545255513 has 64 divisors (see below), whose sum is σ = 419582592000. Its totient is φ = 149988948480.

The previous prime is 253545255487. The next prime is 253545255547. The reversal of 253545255513 is 315552545352.

It is a happy number.

253545255513 is a `hidden beast` number, since 2 + 5 + 3 + 545 + 2 + 55 + 51 + 3 = 666.

It is not a de Polignac number, because 253545255513 - 2¹⁰ = 253545254489 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (253545255553) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21666538 + ... + 21678236.

It is an arithmetic number, because the mean of its divisors is an integer number (6555978000).

Almost surely, 2^253545255513 is an apocalyptic number.

It is an amenable number.

253545255513 is a deficient number, since it is larger than the sum of its proper divisors (166037336487).

253545255513 is a wasteful number, since it uses less digits than its factorization.

253545255513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13459 (or 13453 counting only the distinct ones).

The product of its digits is 2250000, while the sum is 45.

The spelling of 253545255513 in words is "two hundred fifty-three billion, five hundred forty-five million, two hundred fifty-five thousand, five hundred thirteen".