38561618220 has 48 divisors (see below), whose sum is σ = 107998211328. Its totient is φ = 10280652480.

The previous prime is 38561618149. The next prime is 38561618269. The reversal of 38561618220 is 2281616583.

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, 185355 + ... + 333885.

It is an arithmetic number, because the mean of its divisors is an integer number (2249962736).

Almost surely, 2^38561618220 is an apocalyptic number.

38561618220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38561618220 is an abundant number, since it is smaller than the sum of its proper divisors (69436593108).

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

38561618220 is a wasteful number, since it uses less digits than its factorization.

38561618220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152870 (or 152868 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 38561618220 in words is "thirty-eight billion, five hundred sixty-one million, six hundred eighteen thousand, two hundred twenty".