20267236943 has 2 divisors, whose sum is σ = 20267236944. Its totient is φ = 20267236942.

The previous prime is 20267236897. The next prime is 20267236963. The reversal of 20267236943 is 34963276202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20267236943 - 2¹⁴ = 20267220559 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 20267236894 and 20267236903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20267236963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10133618471 + 10133618472.

It is an arithmetic number, because the mean of its divisors is an integer number (10133618472).

Almost surely, 2^20267236943 is an apocalyptic number.

20267236943 is a deficient number, since it is larger than the sum of its proper divisors (1).

20267236943 is an equidigital number, since it uses as much as digits as its factorization.

20267236943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 44.

The spelling of 20267236943 in words is "twenty billion, two hundred sixty-seven million, two hundred thirty-six thousand, nine hundred forty-three".