20622303613 has 2 divisors, whose sum is σ = 20622303614. Its totient is φ = 20622303612.

The previous prime is 20622303607. The next prime is 20622303617. The reversal of 20622303613 is 31630322602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19606160484 + 1016143129 = 140022^2 + 31877^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20622303613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20622303617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10311151806 + 10311151807.

It is an arithmetic number, because the mean of its divisors is an integer number (10311151807).

Almost surely, 2^20622303613 is an apocalyptic number.

It is an amenable number.

20622303613 is a deficient number, since it is larger than the sum of its proper divisors (1).

20622303613 is an equidigital number, since it uses as much as digits as its factorization.

20622303613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 28.

The spelling of 20622303613 in words is "twenty billion, six hundred twenty-two million, three hundred three thousand, six hundred thirteen".