20870443022724 has 45 divisors (see below), whose sum is σ = 54559675588341. Its totient is φ = 6956786930400.

The previous prime is 20870443022719. The next prime is 20870443022743. The reversal of 20870443022724 is 42722034407802.

The square root of 20870443022724 is 4568418.

It is a perfect power (a square), and thus also a powerful number.

20870443022724 is a `hidden beast` number, since 2 + 0 + 8 + 70 + 4 + 4 + 302 + 272 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12876026069124 + 7994416953600 = 3588318^2 + 2827440^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20870443022724.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 82104624 + ... + 82358424.

Almost surely, 2^{20870443022724} is an apocalyptic number.

20870443022724 is the 4568418-th square number.

It is an amenable number.

20870443022724 is an abundant number, since it is smaller than the sum of its proper divisors (33689232565617).

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

20870443022724 is an frugal number, since it uses more digits than its factorization.

20870443022724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507618 (or 253806 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 45.

The spelling of 20870443022724 in words is "twenty trillion, eight hundred seventy billion, four hundred forty-three million, twenty-two thousand, seven hundred twenty-four".