20486222629 has 2 divisors, whose sum is σ = 20486222630. Its totient is φ = 20486222628.

The previous prime is 20486222573. The next prime is 20486222663. The reversal of 20486222629 is 92622268402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11692096900 + 8794125729 = 108130^2 + 93777^2 .

It is a cyclic number.

It is not a de Polignac number, because 20486222629 - 2¹¹ = 20486220581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20486222689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10243111314 + 10243111315.

It is an arithmetic number, because the mean of its divisors is an integer number (10243111315).

Almost surely, 2^20486222629 is an apocalyptic number.

It is an amenable number.

20486222629 is a deficient number, since it is larger than the sum of its proper divisors (1).

20486222629 is an equidigital number, since it uses as much as digits as its factorization.

20486222629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 20486222629 in words is "twenty billion, four hundred eighty-six million, two hundred twenty-two thousand, six hundred twenty-nine".