263231154450565 has 16 divisors (see below), whose sum is σ = 361535965022592. Its totient is φ = 180234743592384.

The previous prime is 263231154450553. The next prime is 263231154450569. The reversal of 263231154450565 is 565054451132362.

263231154450565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 263231154450565 - 2¹⁵ = 263231154417797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263231154450569) 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, 5554548039 + ... + 5554595428.

It is an arithmetic number, because the mean of its divisors is an integer number (22595997813912).

Almost surely, 2^{263231154450565} is an apocalyptic number.

It is an amenable number.

263231154450565 is a deficient number, since it is larger than the sum of its proper divisors (98304810572027).

263231154450565 is a wasteful number, since it uses less digits than its factorization.

263231154450565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11109144156.

The product of its (nonzero) digits is 12960000, while the sum is 52.

The spelling of 263231154450565 in words is "two hundred sixty-three trillion, two hundred thirty-one billion, one hundred fifty-four million, four hundred fifty thousand, five hundred sixty-five".