265037540768 has 144 divisors (see below), whose sum is σ = 704439239616. Its totient is φ = 95318046720.

The previous prime is 265037540711. The next prime is 265037540813. The reversal of 265037540768 is 867045730562.

It is a happy 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, 98180 + ... + 734652.

It is an arithmetic number, because the mean of its divisors is an integer number (4891939164).

Almost surely, 2^265037540768 is an apocalyptic number.

265037540768 is a gapful number since it is divisible by the number (28) 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 265037540768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352219619808).

265037540768 is an abundant number, since it is smaller than the sum of its proper divisors (439401698848).

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

265037540768 is a wasteful number, since it uses less digits than its factorization.

265037540768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636527 (or 636506 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 53.

The spelling of 265037540768 in words is "two hundred sixty-five billion, thirty-seven million, five hundred forty thousand, seven hundred sixty-eight".