265456666500 has 192 divisors, whose sum is σ = 835689603840. Its totient is φ = 65249971200.

The previous prime is 265456666471. The next prime is 265456666547. The reversal of 265456666500 is 5666654562.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 928632 + ... + 1180368.

It is an arithmetic number, because the mean of its divisors is an integer number (4352550020).

Almost surely, 2^265456666500 is an apocalyptic number.

265456666500 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 265456666500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (417844801920).

265456666500 is an abundant number, since it is smaller than the sum of its proper divisors (570232937340).

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

265456666500 is a wasteful number, since it uses less digits than its factorization.

265456666500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251815 (or 251803 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 51.

The spelling of 265456666500 in words is "two hundred sixty-five billion, four hundred fifty-six million, six hundred sixty-six thousand, five hundred".