20966460804 has 27 divisors (see below), whose sum is σ = 53000749893. Its totient is φ = 6988530672.

The previous prime is 20966460797. The next prime is 20966460863. The reversal of 20966460804 is 40806466902.

The square root of 20966460804 is 144798.

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

20966460804 is a `hidden beast` number, since 20 + 96 + 6 + 460 + 80 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9442008900 + 11524451904 = 97170^2 + 107352^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20966460804.

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, 856722 + ... + 880854.

Almost surely, 2^20966460804 is an apocalyptic number.

20966460804 is the 144798-th square number.

It is an amenable number.

20966460804 is an abundant number, since it is smaller than the sum of its proper divisors (32034289089).

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

20966460804 is an frugal number, since it uses more digits than its factorization.

20966460804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48276 (or 24138 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 20966460804 in words is "twenty billion, nine hundred sixty-six million, four hundred sixty thousand, eight hundred four".