20022355637 has 2 divisors, whose sum is σ = 20022355638. Its totient is φ = 20022355636.

The previous prime is 20022355621. The next prime is 20022355663. The reversal of 20022355637 is 73655322002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12750700561 + 7271655076 = 112919^2 + 85274^2 .

It is a cyclic number.

It is not a de Polignac number, because 20022355637 - 2⁴ = 20022355621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20022355597 and 20022355606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20022355607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011177818 + 10011177819.

It is an arithmetic number, because the mean of its divisors is an integer number (10011177819).

Almost surely, 2^20022355637 is an apocalyptic number.

It is an amenable number.

20022355637 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022355637 is an equidigital number, since it uses as much as digits as its factorization.

20022355637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 35.

Adding to 20022355637 its reverse (73655322002), we get a palindrome (93677677639).

The spelling of 20022355637 in words is "twenty billion, twenty-two million, three hundred fifty-five thousand, six hundred thirty-seven".