20466081019 has 2 divisors, whose sum is σ = 20466081020. Its totient is φ = 20466081018.

The previous prime is 20466080981. The next prime is 20466081029. The reversal of 20466081019 is 91018066402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20466081019 - 2⁷ = 20466080891 is a prime.

It is a super-2 number, since 2×20466081019² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20466081029) 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, 10233040509 + 10233040510.

It is an arithmetic number, because the mean of its divisors is an integer number (10233040510).

Almost surely, 2^20466081019 is an apocalyptic number.

20466081019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20466081019 is an equidigital number, since it uses as much as digits as its factorization.

20466081019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 20466081019 in words is "twenty billion, four hundred sixty-six million, eighty-one thousand, nineteen".