16899982993 has 2 divisors, whose sum is σ = 16899982994. Its totient is φ = 16899982992.

The previous prime is 16899982973. The next prime is 16899983003. The reversal of 16899982993 is 39928999861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16283801664 + 616181329 = 127608^2 + 24823^2 .

It is a cyclic number.

It is not a de Polignac number, because 16899982993 - 2²⁵ = 16866428561 is a prime.

It is not a weakly prime, because it can be changed into another prime (16899982903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8449991496 + 8449991497.

It is an arithmetic number, because the mean of its divisors is an integer number (8449991497).

Almost surely, 2^16899982993 is an apocalyptic number.

It is an amenable number.

16899982993 is a deficient number, since it is larger than the sum of its proper divisors (1).

16899982993 is an equidigital number, since it uses as much as digits as its factorization.

16899982993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136048896, while the sum is 73.

The spelling of 16899982993 in words is "sixteen billion, eight hundred ninety-nine million, nine hundred eighty-two thousand, nine hundred ninety-three".