3538686685220 has 48 divisors (see below), whose sum is σ = 7560151538688. Its totient is φ = 1391099063040.

The previous prime is 3538686685169. The next prime is 3538686685231. The reversal of 3538686685220 is 225866868353.

It is a happy number.

It is a super-3 number, since 3×3538686685220³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5263409 + ... + 5897528.

It is an arithmetic number, because the mean of its divisors is an integer number (157503157056).

Almost surely, 2^{3538686685220} is an apocalyptic number.

It is an amenable number.

3538686685220 is an abundant number, since it is smaller than the sum of its proper divisors (4021464853468).

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

3538686685220 is a wasteful number, since it uses less digits than its factorization.

3538686685220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11161220 (or 11161218 counting only the distinct ones).

The product of its (nonzero) digits is 99532800, while the sum is 62.

The spelling of 3538686685220 in words is "three trillion, five hundred thirty-eight billion, six hundred eighty-six million, six hundred eighty-five thousand, two hundred twenty".