253787601117 has 4 divisors (see below), whose sum is σ = 338383468160. Its totient is φ = 169191734076.

The previous prime is 253787601043. The next prime is 253787601127. The reversal of 253787601117 is 711106787352.

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 not a de Polignac number, because 253787601117 - 2²⁶ = 253720492253 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 (253787601127) 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, 42297933517 + ... + 42297933522.

It is an arithmetic number, because the mean of its divisors is an integer number (84595867040).

Almost surely, 2^253787601117 is an apocalyptic number.

It is an amenable number.

253787601117 is a deficient number, since it is larger than the sum of its proper divisors (84595867043).

253787601117 is an equidigital number, since it uses as much as digits as its factorization.

253787601117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84595867042.

The product of its (nonzero) digits is 493920, while the sum is 48.

The spelling of 253787601117 in words is "two hundred fifty-three billion, seven hundred eighty-seven million, six hundred one thousand, one hundred seventeen".