265235155221344 has 144 divisors (see below), whose sum is σ = 663602644622736. Its totient is φ = 103190951808000.

The previous prime is 265235155221317. The next prime is 265235155221359. The reversal of 265235155221344 is 443122551532562.

It is a junction number, because it is equal to n+sod(n) for n = 265235155221292 and 265235155221301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1122422 + ... + 23059274.

It is an arithmetic number, because the mean of its divisors is an integer number (4608351698769).

Almost surely, 2^{265235155221344} 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 265235155221344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331801322311368).

265235155221344 is an abundant number, since it is smaller than the sum of its proper divisors (398367489401392).

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

265235155221344 is a wasteful number, since it uses less digits than its factorization.

265235155221344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21937589 (or 21937574 counting only the distinct ones).

The product of its digits is 8640000, while the sum is 50.

The spelling of 265235155221344 in words is "two hundred sixty-five trillion, two hundred thirty-five billion, one hundred fifty-five million, two hundred twenty-one thousand, three hundred forty-four".