253530535013 has 4 divisors (see below), whose sum is σ = 289749182880. Its totient is φ = 217311887148.

The previous prime is 253530535009. The next prime is 253530535021. The reversal of 253530535013 is 310535035352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 253530535013 - 2² = 253530535009 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 (253530535003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18109323923 + ... + 18109323936.

It is an arithmetic number, because the mean of its divisors is an integer number (72437295720).

Almost surely, 2^253530535013 is an apocalyptic number.

It is an amenable number.

253530535013 is a deficient number, since it is larger than the sum of its proper divisors (36218647867).

253530535013 is an equidigital number, since it uses as much as digits as its factorization.

253530535013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36218647866.

The product of its (nonzero) digits is 101250, while the sum is 35.

The spelling of 253530535013 in words is "two hundred fifty-three billion, five hundred thirty million, five hundred thirty-five thousand, thirteen".