20102216737 has 2 divisors, whose sum is σ = 20102216738. Its totient is φ = 20102216736.

The previous prime is 20102216677. The next prime is 20102216747. The reversal of 20102216737 is 73761220102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13296626721 + 6805590016 = 115311^2 + 82496^2 .

It is a cyclic number.

It is not a de Polignac number, because 20102216737 - 2⁷ = 20102216609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20102216699 and 20102216708.

It is not a weakly prime, because it can be changed into another prime (20102216747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051108368 + 10051108369.

It is an arithmetic number, because the mean of its divisors is an integer number (10051108369).

Almost surely, 2^20102216737 is an apocalyptic number.

It is an amenable number.

20102216737 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102216737 is an equidigital number, since it uses as much as digits as its factorization.

20102216737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 31.

Adding to 20102216737 its reverse (73761220102), we get a palindrome (93863436839).

The spelling of 20102216737 in words is "twenty billion, one hundred two million, two hundred sixteen thousand, seven hundred thirty-seven".