265640531536047 has 4 divisors (see below), whose sum is σ = 354187375381400. Its totient is φ = 177093687690696.

The previous prime is 265640531535961. The next prime is 265640531536067. The reversal of 265640531536047 is 740635135046562.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 265640531536047 - 2¹⁵ = 265640531503279 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 (265640531536067) 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, 44273421922672 + ... + 44273421922677.

It is an arithmetic number, because the mean of its divisors is an integer number (88546843845350).

Almost surely, 2^{265640531536047} is an apocalyptic number.

265640531536047 is a deficient number, since it is larger than the sum of its proper divisors (88546843845353).

265640531536047 is an equidigital number, since it uses as much as digits as its factorization.

265640531536047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88546843845352.

The product of its (nonzero) digits is 54432000, while the sum is 57.

The spelling of 265640531536047 in words is "two hundred sixty-five trillion, six hundred forty billion, five hundred thirty-one million, five hundred thirty-six thousand, forty-seven".