265456049640 has 64 divisors (see below), whose sum is σ = 806448787200. Its totient is φ = 69892223232.

The previous prime is 265456049591. The next prime is 265456049641. The reversal of 265456049640 is 46940654562.

It is a happy number.

265456049640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (265456049641) 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, 13991367 + ... + 14010326.

It is an arithmetic number, because the mean of its divisors is an integer number (12600762300).

Almost surely, 2^265456049640 is an apocalyptic number.

265456049640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265456049640 is an abundant number, since it is smaller than the sum of its proper divisors (540992737560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265456049640 is a wasteful number, since it uses less digits than its factorization.

265456049640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28001786 (or 28001782 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 51.

The spelling of 265456049640 in words is "two hundred sixty-five billion, four hundred fifty-six million, forty-nine thousand, six hundred forty".