265313397617 has 8 divisors (see below), whose sum is σ = 267423184896. Its totient is φ = 263203934112.

The previous prime is 265313397611. The next prime is 265313397631. The reversal of 265313397617 is 716793313562.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 265313397617 - 2³⁰ = 264239655793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265313397611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1723628 + ... + 1871234.

It is an arithmetic number, because the mean of its divisors is an integer number (33427898112).

Almost surely, 2^265313397617 is an apocalyptic number.

It is an amenable number.

265313397617 is a deficient number, since it is larger than the sum of its proper divisors (2109787279).

265313397617 is a wasteful number, since it uses less digits than its factorization.

265313397617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161887.

The product of its digits is 4286520, while the sum is 53.

The spelling of 265313397617 in words is "two hundred sixty-five billion, three hundred thirteen million, three hundred ninety-seven thousand, six hundred seventeen".