16640762563 has 2 divisors, whose sum is σ = 16640762564. Its totient is φ = 16640762562.

The previous prime is 16640762483. The next prime is 16640762569. The reversal of 16640762563 is 36526704661.

It is a strong prime.

It is an emirp because it is prime and its reverse (36526704661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16640762563 - 2¹³ = 16640754371 is a prime.

It is not a weakly prime, because it can be changed into another prime (16640762569) 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, 8320381281 + 8320381282.

It is an arithmetic number, because the mean of its divisors is an integer number (8320381282).

Almost surely, 2^16640762563 is an apocalyptic number.

16640762563 is a deficient number, since it is larger than the sum of its proper divisors (1).

16640762563 is an equidigital number, since it uses as much as digits as its factorization.

16640762563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 16640762563 in words is "sixteen billion, six hundred forty million, seven hundred sixty-two thousand, five hundred sixty-three".