245872542665 has 16 divisors (see below), whose sum is σ = 319049632512. Its totient is φ = 181188674304.

The previous prime is 245872542659. The next prime is 245872542667. The reversal of 245872542665 is 566245278542.

It is a de Polignac number, because none of the positive numbers 2^k-245872542665 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245872542665.

It is not an unprimeable number, because it can be changed into a prime (245872542667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30768539 + ... + 30776528.

It is an arithmetic number, because the mean of its divisors is an integer number (19940602032).

Almost surely, 2^245872542665 is an apocalyptic number.

It is an amenable number.

245872542665 is a deficient number, since it is larger than the sum of its proper divisors (73177089847).

245872542665 is a wasteful number, since it uses less digits than its factorization.

245872542665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61545136.

The product of its digits is 32256000, while the sum is 56.

The spelling of 245872542665 in words is "two hundred forty-five billion, eight hundred seventy-two million, five hundred forty-two thousand, six hundred sixty-five".