20541019237 has 2 divisors, whose sum is σ = 20541019238. Its totient is φ = 20541019236.

The previous prime is 20541019231. The next prime is 20541019357. The reversal of 20541019237 is 73291014502.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20109792481 + 431226756 = 141809^2 + 20766^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20541019237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20541019231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10270509618 + 10270509619.

It is an arithmetic number, because the mean of its divisors is an integer number (10270509619).

Almost surely, 2^20541019237 is an apocalyptic number.

It is an amenable number.

20541019237 is a deficient number, since it is larger than the sum of its proper divisors (1).

20541019237 is an equidigital number, since it uses as much as digits as its factorization.

20541019237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 20541019237 in words is "twenty billion, five hundred forty-one million, nineteen thousand, two hundred thirty-seven".