20973764850 has 24 divisors (see below), whose sum is σ = 52014937200. Its totient is φ = 5593003920.

The previous prime is 20973764843. The next prime is 20973764893. The reversal of 20973764850 is 5846737902.

It is a junction number, because it is equal to n+sod(n) for n = 20973764793 and 20973764802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69912400 + ... + 69912699.

It is an arithmetic number, because the mean of its divisors is an integer number (2167289050).

Almost surely, 2^20973764850 is an apocalyptic number.

20973764850 is an abundant number, since it is smaller than the sum of its proper divisors (31041172350).

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

20973764850 is a wasteful number, since it uses less digits than its factorization.

20973764850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139825114 (or 139825109 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 51.

The spelling of 20973764850 in words is "twenty billion, nine hundred seventy-three million, seven hundred sixty-four thousand, eight hundred fifty".