20430673699 has 2 divisors, whose sum is σ = 20430673700. Its totient is φ = 20430673698.

The previous prime is 20430673673. The next prime is 20430673759. The reversal of 20430673699 is 99637603402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20430673699 - 2⁵ = 20430673667 is a prime.

It is not a weakly prime, because it can be changed into another prime (20430673649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10215336849 + 10215336850.

It is an arithmetic number, because the mean of its divisors is an integer number (10215336850).

Almost surely, 2^20430673699 is an apocalyptic number.

20430673699 is a deficient number, since it is larger than the sum of its proper divisors (1).

20430673699 is an equidigital number, since it uses as much as digits as its factorization.

20430673699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 49.

The spelling of 20430673699 in words is "twenty billion, four hundred thirty million, six hundred seventy-three thousand, six hundred ninety-nine".