265493614464 has 320 divisors, whose sum is σ = 878343607680. Its totient is φ = 79053926400.

The previous prime is 265493614411. The next prime is 265493614481. The reversal of 265493614464 is 464416394562.

265493614464 is a `hidden beast` number, since 2 + 6 + 5 + 493 + 6 + 144 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 265493614464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4146534 + ... + 4210074.

It is an arithmetic number, because the mean of its divisors is an integer number (2744823774).

Almost surely, 2^265493614464 is an apocalyptic number.

265493614464 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 265493614464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439171803840).

265493614464 is an abundant number, since it is smaller than the sum of its proper divisors (612849993216).

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

265493614464 is a wasteful number, since it uses less digits than its factorization.

265493614464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63611 (or 63590 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 54.

The spelling of 265493614464 in words is "two hundred sixty-five billion, four hundred ninety-three million, six hundred fourteen thousand, four hundred sixty-four".