133566256260420 has 24 divisors (see below), whose sum is σ = 373985517529344. Its totient is φ = 35617668336096.

The previous prime is 133566256260373. The next prime is 133566256260421. The reversal of 133566256260420 is 24062652665331.

It is a super-2 number, since 2×133566256260420² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133566256260421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1113052135444 + ... + 1113052135563.

It is an arithmetic number, because the mean of its divisors is an integer number (15582729897056).

Almost surely, 2^{133566256260420} is an apocalyptic number.

133566256260420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133566256260420 is an abundant number, since it is smaller than the sum of its proper divisors (240419261268924).

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

133566256260420 is a wasteful number, since it uses less digits than its factorization.

133566256260420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226104271019 (or 2226104271017 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 51.

The spelling of 133566256260420 in words is "one hundred thirty-three trillion, five hundred sixty-six billion, two hundred fifty-six million, two hundred sixty thousand, four hundred twenty".