265640353154336 has 96 divisors (see below), whose sum is σ = 532279111956480. Its totient is φ = 130464415411200.

The previous prime is 265640353154269. The next prime is 265640353154437. The reversal of 265640353154336 is 633451353046562.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4967163245 + ... + 4967216723.

It is an arithmetic number, because the mean of its divisors is an integer number (5544574082880).

Almost surely, 2^{265640353154336} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265640353154336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266139555978240).

265640353154336 is an abundant number, since it is smaller than the sum of its proper divisors (266638758802144).

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

265640353154336 is a wasteful number, since it uses less digits than its factorization.

265640353154336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56978 (or 56970 counting only the distinct ones).

The product of its (nonzero) digits is 69984000, while the sum is 56.

The spelling of 265640353154336 in words is "two hundred sixty-five trillion, six hundred forty billion, three hundred fifty-three million, one hundred fifty-four thousand, three hundred thirty-six".