265717567660 has 48 divisors (see below), whose sum is σ = 590620998240. Its totient is φ = 100136632320.

The previous prime is 265717567657. The next prime is 265717567673. The reversal of 265717567660 is 66765717562.

It is a junction number, because it is equal to n+sod(n) for n = 265717567595 and 265717567604.

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, 1862869 + ... + 2000428.

It is an arithmetic number, because the mean of its divisors is an integer number (12304604130).

Almost surely, 2^265717567660 is an apocalyptic number.

265717567660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265717567660 is an abundant number, since it is smaller than the sum of its proper divisors (324903430580).

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

265717567660 is a wasteful number, since it uses less digits than its factorization.

265717567660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3863506 (or 3863504 counting only the distinct ones).

The product of its (nonzero) digits is 22226400, while the sum is 58.

The spelling of 265717567660 in words is "two hundred sixty-five billion, seven hundred seventeen million, five hundred sixty-seven thousand, six hundred sixty".