20850503773 has 24 divisors (see below), whose sum is σ = 23577597344. Its totient is φ = 18411481440.

The previous prime is 20850503671. The next prime is 20850503777. The reversal of 20850503773 is 37730505802.

It is a de Polignac number, because none of the positive numbers 2^k-20850503773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20850503777) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2875090 + ... + 2882332.

Almost surely, 2^20850503773 is an apocalyptic number.

It is an amenable number.

20850503773 is a deficient number, since it is larger than the sum of its proper divisors (2727093571).

20850503773 is a wasteful number, since it uses less digits than its factorization.

20850503773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7945 (or 7934 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 40.

The spelling of 20850503773 in words is "twenty billion, eight hundred fifty million, five hundred three thousand, seven hundred seventy-three".