1662641183999 has 2 divisors, whose sum is σ = 1662641184000. Its totient is φ = 1662641183998.

The previous prime is 1662641183989. The next prime is 1662641184019. The reversal of 1662641183999 is 9993811462661.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1662641183999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1662641183939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831320591999 + 831320592000.

It is an arithmetic number, because the mean of its divisors is an integer number (831320592000).

Almost surely, 2^{1662641183999} is an apocalyptic number.

1662641183999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1662641183999 is an equidigital number, since it uses as much as digits as its factorization.

1662641183999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30233088, while the sum is 65.

The spelling of 1662641183999 in words is "one trillion, six hundred sixty-two billion, six hundred forty-one million, one hundred eighty-three thousand, nine hundred ninety-nine".