265065570560 has 144 divisors (see below), whose sum is σ = 740426736000. Its totient is φ = 90879473664.

The previous prime is 265065570547. The next prime is 265065570571. The reversal of 265065570560 is 65075560562.

265065570560 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×265065570560³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137171 + ... + 740909.

Almost surely, 2^265065570560 is an apocalyptic number.

265065570560 is a gapful number since it is divisible by the number (20) 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 265065570560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370213368000).

265065570560 is an abundant number, since it is smaller than the sum of its proper divisors (475361165440).

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

265065570560 is an frugal number, since it uses more digits than its factorization.

265065570560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603781 (or 603753 counting only the distinct ones).

The product of its (nonzero) digits is 1890000, while the sum is 47.

The spelling of 265065570560 in words is "two hundred sixty-five billion, sixty-five million, five hundred seventy thousand, five hundred sixty".