38855005220 has 12 divisors (see below), whose sum is σ = 81595511004. Its totient is φ = 15542002080.

The previous prime is 38855005201. The next prime is 38855005247. The reversal of 38855005220 is 2250055883.

It can be written as a sum of positive squares in 2 ways, for example, as 20305110016 + 18549895204 = 142496^2 + 136198^2 .

It is a super-2 number, since 2×38855005220² (a number of 22 digits) contains 22 as substring.

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, 971375111 + ... + 971375150.

It is an arithmetic number, because the mean of its divisors is an integer number (6799625917).

Almost surely, 2^38855005220 is an apocalyptic number.

It is an amenable number.

38855005220 is an abundant number, since it is smaller than the sum of its proper divisors (42740505784).

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

38855005220 is a wasteful number, since it uses less digits than its factorization.

38855005220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1942750270 (or 1942750268 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 38.

The spelling of 38855005220 in words is "thirty-eight billion, eight hundred fifty-five million, five thousand, two hundred twenty".