20894765575072 has 24 divisors (see below), whose sum is σ = 41136961773600. Its totient is φ = 10447283219904.

The previous prime is 20894765575067. The next prime is 20894765575091. The reversal of 20894765575072 is 27057556749802.

It is a junction number, because it is equal to n+sod(n) for n = 20894765574989 and 20894765575007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 358179 + ... + 6474397.

It is an arithmetic number, because the mean of its divisors is an integer number (1714040073900).

Almost surely, 2^{20894765575072} is an apocalyptic number.

It is an amenable number.

20894765575072 is a deficient number, since it is larger than the sum of its proper divisors (20242196198528).

20894765575072 is a wasteful number, since it uses less digits than its factorization.

20894765575072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6222988 (or 6222980 counting only the distinct ones).

The product of its (nonzero) digits is 296352000, while the sum is 67.

The spelling of 20894765575072 in words is "twenty trillion, eight hundred ninety-four billion, seven hundred sixty-five million, five hundred seventy-five thousand, seventy-two".