265961455363 has 4 divisors (see below), whose sum is σ = 266611728280. Its totient is φ = 265311182448.

The previous prime is 265961455349. The next prime is 265961455367. The reversal of 265961455363 is 363554169562.

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 265961455363 - 2³³ = 257371520771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265961455367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325135845 + ... + 325136662.

It is an arithmetic number, because the mean of its divisors is an integer number (66652932070).

Almost surely, 2^265961455363 is an apocalyptic number.

265961455363 is a deficient number, since it is larger than the sum of its proper divisors (650272917).

265961455363 is an equidigital number, since it uses as much as digits as its factorization.

265961455363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650272916.

The product of its digits is 17496000, while the sum is 55.

The spelling of 265961455363 in words is "two hundred sixty-five billion, nine hundred sixty-one million, four hundred fifty-five thousand, three hundred sixty-three".