220971542472 has 36 divisors (see below), whose sum is σ = 598475397195. Its totient is φ = 73655851248.

The previous prime is 220971542423. The next prime is 220971542543. The reversal of 220971542472 is 274245179022.

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.

220971542472 is a `hidden beast` number, since 2 + 20 + 9 + 7 + 154 + 2 + 472 = 666.

It can be written as a sum of positive squares in only one way, i.e., 110485771236 + 110485771236 = 332394^2 + 332394^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=332394.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3961029 + ... + 4016427.

Almost surely, 2^220971542472 is an apocalyptic number.

It is an amenable number.

220971542472 is an abundant number, since it is smaller than the sum of its proper divisors (377503854723).

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

220971542472 is an frugal number, since it uses more digits than its factorization.

220971542472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110810 (or 55404 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 220971542472 in words is "two hundred twenty billion, nine hundred seventy-one million, five hundred forty-two thousand, four hundred seventy-two".