265217872220 has 48 divisors (see below), whose sum is σ = 670024104960. Its totient is φ = 86145954624.

The previous prime is 265217872217. The next prime is 265217872243. The reversal of 265217872220 is 22278712562.

265217872220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49850324 + ... + 49855643.

It is an arithmetic number, because the mean of its divisors is an integer number (13958835520).

Almost surely, 2^265217872220 is an apocalyptic number.

265217872220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265217872220 is an abundant number, since it is smaller than the sum of its proper divisors (404806232740).

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

265217872220 is a wasteful number, since it uses less digits than its factorization.

265217872220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99706002 (or 99706000 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 44.

The spelling of 265217872220 in words is "two hundred sixty-five billion, two hundred seventeen million, eight hundred seventy-two thousand, two hundred twenty".