265561352672 has 192 divisors, whose sum is σ = 671358191616. Its totient is φ = 100382146560.

The previous prime is 265561352653. The next prime is 265561352699. The reversal of 265561352672 is 276253165562.

265561352672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 265561352672.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33454688 + ... + 33462624.

It is an arithmetic number, because the mean of its divisors is an integer number (3496657248).

Almost surely, 2^265561352672 is an apocalyptic number.

265561352672 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265561352672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335679095808).

265561352672 is an abundant number, since it is smaller than the sum of its proper divisors (405796838944).

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

265561352672 is a wasteful number, since it uses less digits than its factorization.

265561352672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8369 (or 8361 counting only the distinct ones).

The product of its digits is 4536000, while the sum is 50.

The spelling of 265561352672 in words is "two hundred sixty-five billion, five hundred sixty-one million, three hundred fifty-two thousand, six hundred seventy-two".