19665520883 has 2 divisors, whose sum is σ = 19665520884. Its totient is φ = 19665520882.

The previous prime is 19665520877. The next prime is 19665520951. The reversal of 19665520883 is 38802556691.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19665520883 is a prime.

It is not a weakly prime, because it can be changed into another prime (19665520843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9832760441 + 9832760442.

It is an arithmetic number, because the mean of its divisors is an integer number (9832760442).

Almost surely, 2^19665520883 is an apocalyptic number.

19665520883 is a deficient number, since it is larger than the sum of its proper divisors (1).

19665520883 is an equidigital number, since it uses as much as digits as its factorization.

19665520883 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3110400, while the sum is 53.

The spelling of 19665520883 in words is "nineteen billion, six hundred sixty-five million, five hundred twenty thousand, eight hundred eighty-three".