38866717220 has 12 divisors (see below), whose sum is σ = 81620106204. Its totient is φ = 15546686880.

The previous prime is 38866717217. The next prime is 38866717237. The reversal of 38866717220 is 2271766883.

It can be written as a sum of positive squares in 2 ways, for example, as 4083721216 + 34782996004 = 63904^2 + 186502^2 .

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 971667911 + ... + 971667950.

It is an arithmetic number, because the mean of its divisors is an integer number (6801675517).

Almost surely, 2^38866717220 is an apocalyptic number.

It is an amenable number.

38866717220 is an abundant number, since it is smaller than the sum of its proper divisors (42753388984).

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

38866717220 is a wasteful number, since it uses less digits than its factorization.

38866717220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943335870 (or 1943335868 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 50.

The spelling of 38866717220 in words is "thirty-eight billion, eight hundred sixty-six million, seven hundred seventeen thousand, two hundred twenty".