220231589138 has 54 divisors (see below), whose sum is σ = 368074599669. Its totient is φ = 98754691200.

The previous prime is 220231589129. The next prime is 220231589143. The reversal of 220231589138 is 831985132022.

220231589138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 219658130329 + 573458809 = 468677^2 + 23947^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=331837.

It is a Duffinian number.

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 26 ways as a sum of consecutive naturals, for example, 708140003 + ... + 708140313.

Almost surely, 2^220231589138 is an apocalyptic number.

220231589138 is a deficient number, since it is larger than the sum of its proper divisors (147843010531).

220231589138 is an frugal number, since it uses more digits than its factorization.

220231589138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

It can be divided in two parts, 22023 and 1589138, that added together give a palindrome (1611161).

The spelling of 220231589138 in words is "two hundred twenty billion, two hundred thirty-one million, five hundred eighty-nine thousand, one hundred thirty-eight".