20446466662247 has 2 divisors, whose sum is σ = 20446466662248. Its totient is φ = 20446466662246.

The previous prime is 20446466662217. The next prime is 20446466662291. The reversal of 20446466662247 is 74226666464402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20446466662247 - 2¹⁶ = 20446466596711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20446466662217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10223233331123 + 10223233331124.

It is an arithmetic number, because the mean of its divisors is an integer number (10223233331124).

Almost surely, 2^{20446466662247} is an apocalyptic number.

20446466662247 is a deficient number, since it is larger than the sum of its proper divisors (1).

20446466662247 is an equidigital number, since it uses as much as digits as its factorization.

20446466662247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 111476736, while the sum is 59.

The spelling of 20446466662247 in words is "twenty trillion, four hundred forty-six billion, four hundred sixty-six million, six hundred sixty-two thousand, two hundred forty-seven".