253719317195 has 4 divisors (see below), whose sum is σ = 304463180640. Its totient is φ = 202975453752.

The previous prime is 253719317077. The next prime is 253719317197. The reversal of 253719317195 is 591713917352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 253719317195 - 2²² = 253715122891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253719317197) 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, 25371931715 + ... + 25371931724.

It is an arithmetic number, because the mean of its divisors is an integer number (76115795160).

Almost surely, 2^253719317195 is an apocalyptic number.

253719317195 is a deficient number, since it is larger than the sum of its proper divisors (50743863445).

253719317195 is an equidigital number, since it uses as much as digits as its factorization.

253719317195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50743863444.

The product of its digits is 1786050, while the sum is 53.

The spelling of 253719317195 in words is "two hundred fifty-three billion, seven hundred nineteen million, three hundred seventeen thousand, one hundred ninety-five".