20766242241 has 28 divisors (see below), whose sum is σ = 31146827520. Its totient is φ = 13838956920.

The previous prime is 20766242221. The next prime is 20766242249. The reversal of 20766242241 is 14224266702.

20766242241 is a `hidden beast` number, since 2 + 0 + 7 + 6 + 624 + 2 + 24 + 1 = 666.

It is not a de Polignac number, because 20766242241 - 2⁷ = 20766242113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20766242196 and 20766242205.

It is not an unprimeable number, because it can be changed into a prime (20766242249) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 3583056 + ... + 3588846.

Almost surely, 2^20766242241 is an apocalyptic number.

It is an amenable number.

20766242241 is a deficient number, since it is larger than the sum of its proper divisors (10380585279).

20766242241 is an frugal number, since it uses more digits than its factorization.

20766242241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10728 (or 10713 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The spelling of 20766242241 in words is "twenty billion, seven hundred sixty-six million, two hundred forty-two thousand, two hundred forty-one".