20229762437 has 2 divisors, whose sum is σ = 20229762438. Its totient is φ = 20229762436.

The previous prime is 20229762433. The next prime is 20229762457. The reversal of 20229762437 is 73426792202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14843523556 + 5386238881 = 121834^2 + 73391^2 .

It is a cyclic number.

It is not a de Polignac number, because 20229762437 - 2² = 20229762433 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20229762433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10114881218 + 10114881219.

It is an arithmetic number, because the mean of its divisors is an integer number (10114881219).

Almost surely, 2^20229762437 is an apocalyptic number.

It is an amenable number.

20229762437 is a deficient number, since it is larger than the sum of its proper divisors (1).

20229762437 is an equidigital number, since it uses as much as digits as its factorization.

20229762437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 44.

The spelling of 20229762437 in words is "twenty billion, two hundred twenty-nine million, seven hundred sixty-two thousand, four hundred thirty-seven".