20341566499 has 2 divisors, whose sum is σ = 20341566500. Its totient is φ = 20341566498.

The previous prime is 20341566491. The next prime is 20341566521. The reversal of 20341566499 is 99466514302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20341566499 - 2³ = 20341566491 is a prime.

It is not a weakly prime, because it can be changed into another prime (20341566491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10170783249 + 10170783250.

It is an arithmetic number, because the mean of its divisors is an integer number (10170783250).

Almost surely, 2^20341566499 is an apocalyptic number.

20341566499 is a deficient number, since it is larger than the sum of its proper divisors (1).

20341566499 is an equidigital number, since it uses as much as digits as its factorization.

20341566499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 49.

The spelling of 20341566499 in words is "twenty billion, three hundred forty-one million, five hundred sixty-six thousand, four hundred ninety-nine".