20943244854 has 24 divisors (see below), whose sum is σ = 51859463760. Its totient is φ = 5983784208.

The previous prime is 20943244837. The next prime is 20943244873. The reversal of 20943244854 is 45844234902.

20943244854 is a `hidden beast` number, since 209 + 432 + 4 + 4 + 8 + 5 + 4 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83107989 + ... + 83108240.

It is an arithmetic number, because the mean of its divisors is an integer number (2160810990).

Almost surely, 2^20943244854 is an apocalyptic number.

20943244854 is an abundant number, since it is smaller than the sum of its proper divisors (30916218906).

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

20943244854 is a wasteful number, since it uses less digits than its factorization.

20943244854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166216244 (or 166216241 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The spelling of 20943244854 in words is "twenty billion, nine hundred forty-three million, two hundred forty-four thousand, eight hundred fifty-four".