20664006262019 has 2 divisors, whose sum is σ = 20664006262020. Its totient is φ = 20664006262018.

The previous prime is 20664006262007. The next prime is 20664006262153. The reversal of 20664006262019 is 91026260046602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20664006262019 - 2³² = 20659711294723 is a prime.

It is a super-2 number, since 2×20664006262019² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20664006202019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10332003131009 + 10332003131010.

It is an arithmetic number, because the mean of its divisors is an integer number (10332003131010).

Almost surely, 2^{20664006262019} is an apocalyptic number.

20664006262019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20664006262019 is an equidigital number, since it uses as much as digits as its factorization.

20664006262019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 20664006262019 in words is "twenty trillion, six hundred sixty-four billion, six million, two hundred sixty-two thousand, nineteen".