264440610206563 has 8 divisors (see below), whose sum is σ = 318124042353920. Its totient is φ = 214733728588680.

The previous prime is 264440610206561. The next prime is 264440610206579. The reversal of 264440610206563 is 365602016044462.

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

It is not a de Polignac number, because 264440610206563 - 2¹ = 264440610206561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264440610206561) 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, 994137632223 + ... + 994137632488.

It is an arithmetic number, because the mean of its divisors is an integer number (39765505294240).

Almost surely, 2^{264440610206563} is an apocalyptic number.

264440610206563 is a deficient number, since it is larger than the sum of its proper divisors (53683432147357).

264440610206563 is a wasteful number, since it uses less digits than its factorization.

264440610206563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988275264737.

The product of its (nonzero) digits is 4976640, while the sum is 49.

The spelling of 264440610206563 in words is "two hundred sixty-four trillion, four hundred forty billion, six hundred ten million, two hundred six thousand, five hundred sixty-three".