20893265824 has 24 divisors (see below), whose sum is σ = 41265054180. Its totient is φ = 10413252096.

The previous prime is 20893265753. The next prime is 20893265831. The reversal of 20893265824 is 42856239802.

It can be written as a sum of positive squares in 2 ways, for example, as 19395575824 + 1497690000 = 139268^2 + 38700^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1032979 + ... + 1053010.

Almost surely, 2^20893265824 is an apocalyptic number.

It is an amenable number.

20893265824 is a deficient number, since it is larger than the sum of its proper divisors (20371788356).

20893265824 is a wasteful number, since it uses less digits than its factorization.

20893265824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086312 (or 2086304 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 20893265824 in words is "twenty billion, eight hundred ninety-three million, two hundred sixty-five thousand, eight hundred twenty-four".