20746006499 has 2 divisors, whose sum is σ = 20746006500. Its totient is φ = 20746006498.

The previous prime is 20746006453. The next prime is 20746006513. The reversal of 20746006499 is 99460064702.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20746006499 is a prime.

It is not a weakly prime, because it can be changed into another prime (20746006999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10373003249 + 10373003250.

It is an arithmetic number, because the mean of its divisors is an integer number (10373003250).

Almost surely, 2^20746006499 is an apocalyptic number.

20746006499 is a deficient number, since it is larger than the sum of its proper divisors (1).

20746006499 is an equidigital number, since it uses as much as digits as its factorization.

20746006499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 47.

The spelling of 20746006499 in words is "twenty billion, seven hundred forty-six million, six thousand, four hundred ninety-nine".