20940445945544 has 32 divisors (see below), whose sum is σ = 41333247688800. Its totient is φ = 9918337766400.

The previous prime is 20940445945543. The next prime is 20940445945571. The reversal of 20940445945544 is 44554954404902.

It is not an unprimeable number, because it can be changed into a prime (20940445945543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3855482 + ... + 7532969.

It is an arithmetic number, because the mean of its divisors is an integer number (1291663990275).

Almost surely, 2^{20940445945544} is an apocalyptic number.

It is an amenable number.

20940445945544 is a deficient number, since it is larger than the sum of its proper divisors (20392801743256).

20940445945544 is a wasteful number, since it uses less digits than its factorization.

20940445945544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11400573 (or 11400569 counting only the distinct ones).

The product of its (nonzero) digits is 82944000, while the sum is 59.

The spelling of 20940445945544 in words is "twenty trillion, nine hundred forty billion, four hundred forty-five million, nine hundred forty-five thousand, five hundred forty-four".