20546928964 has 9 divisors (see below), whose sum is σ = 35957627391. Its totient is φ = 10273321140.

The previous prime is 20546928953. The next prime is 20546928979. The reversal of 20546928964 is 46982964502.

The square root of 20546928964 is 143342.

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

It is a super-2 number, since 2×20546928964² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 250849 + ... + 322519.

Almost surely, 2^20546928964 is an apocalyptic number.

20546928964 is the 143342-nd square number.

It is an amenable number.

20546928964 is a deficient number, since it is larger than the sum of its proper divisors (15410698427).

20546928964 is an frugal number, since it uses more digits than its factorization.

20546928964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143346 (or 71673 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 20546928964 in words is "twenty billion, five hundred forty-six million, nine hundred twenty-eight thousand, nine hundred sixty-four".