20466363647 has 2 divisors, whose sum is σ = 20466363648. Its totient is φ = 20466363646.

The previous prime is 20466363623. The next prime is 20466363667. The reversal of 20466363647 is 74636366402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20466363647 - 2¹⁴ = 20466347263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20466363607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10233181823 + 10233181824.

It is an arithmetic number, because the mean of its divisors is an integer number (10233181824).

Almost surely, 2^20466363647 is an apocalyptic number.

20466363647 is a deficient number, since it is larger than the sum of its proper divisors (1).

20466363647 is an equidigital number, since it uses as much as digits as its factorization.

20466363647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 47.

The spelling of 20466363647 in words is "twenty billion, four hundred sixty-six million, three hundred sixty-three thousand, six hundred forty-seven".