220397538888 has 108 divisors (see below), whose sum is σ = 607525645545. Its totient is φ = 72181817280.

The previous prime is 220397538877. The next prime is 220397538953. The reversal of 220397538888 is 888835793022.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

220397538888 is a `hidden beast` number, since 2 + 2 + 0 + 3 + 97 + 538 + 8 + 8 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 149291049924 + 71106488964 = 386382^2 + 266658^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=331962.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 242995731 + ... + 242996637.

Almost surely, 2^220397538888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220397538888

220397538888 is an abundant number, since it is smaller than the sum of its proper divisors (387128106657).

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

220397538888 is an frugal number, since it uses more digits than its factorization.

220397538888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948 (or 973 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 220397538888 in words is "two hundred twenty billion, three hundred ninety-seven million, five hundred thirty-eight thousand, eight hundred eighty-eight".