20499469637963 has 2 divisors, whose sum is σ = 20499469637964. Its totient is φ = 20499469637962.

The previous prime is 20499469637893. The next prime is 20499469637987. The reversal of 20499469637963 is 36973696499402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20499469637963 - 2²⁰ = 20499468589387 is a prime.

It is not a weakly prime, because it can be changed into another prime (20499469637263) 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, 10249734818981 + 10249734818982.

It is an arithmetic number, because the mean of its divisors is an integer number (10249734818982).

Almost surely, 2^{20499469637963} is an apocalyptic number.

20499469637963 is a deficient number, since it is larger than the sum of its proper divisors (1).

20499469637963 is an equidigital number, since it uses as much as digits as its factorization.

20499469637963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857026816, while the sum is 77.

The spelling of 20499469637963 in words is "twenty trillion, four hundred ninety-nine billion, four hundred sixty-nine million, six hundred thirty-seven thousand, nine hundred sixty-three".