265705046064 has 160 divisors (see below), whose sum is σ = 809708264640. Its totient is φ = 83134107648.

The previous prime is 265705046053. The next prime is 265705046069. The reversal of 265705046064 is 460640507562.

265705046064 is a `hidden beast` number, since 2 + 65 + 70 + 5 + 0 + 460 + 64 = 666.

It is not an unprimeable number, because it can be changed into a prime (265705046069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2690814 + ... + 2787810.

It is an arithmetic number, because the mean of its divisors is an integer number (5060676654).

Almost surely, 2^265705046064 is an apocalyptic number.

265705046064 is a gapful number since it is divisible by the number (24) 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 265705046064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404854132320).

265705046064 is an abundant number, since it is smaller than the sum of its proper divisors (544003218576).

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

265705046064 is a wasteful number, since it uses less digits than its factorization.

265705046064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97404 (or 97392 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 265705046064 in words is "two hundred sixty-five billion, seven hundred five million, forty-six thousand, sixty-four".