265611240463 has 4 divisors (see below), whose sum is σ = 267961782528. Its totient is φ = 263260698400.

The previous prime is 265611240457. The next prime is 265611240493. The reversal of 265611240463 is 364042116562.

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 265611240463 - 2⁵ = 265611240431 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265611240493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1175270863 + ... + 1175271088.

It is an arithmetic number, because the mean of its divisors is an integer number (66990445632).

Almost surely, 2^265611240463 is an apocalyptic number.

265611240463 is a deficient number, since it is larger than the sum of its proper divisors (2350542065).

265611240463 is a wasteful number, since it uses less digits than its factorization.

265611240463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2350542064.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 265611240463 in words is "two hundred sixty-five billion, six hundred eleven million, two hundred forty thousand, four hundred sixty-three".