16694620049 has 2 divisors, whose sum is σ = 16694620050. Its totient is φ = 16694620048.

The previous prime is 16694620021. The next prime is 16694620073. The reversal of 16694620049 is 94002649661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16647450625 + 47169424 = 129025^2 + 6868^2 .

It is a cyclic number.

It is not a de Polignac number, because 16694620049 - 2⁸ = 16694619793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16694619985 and 16694620012.

It is not a weakly prime, because it can be changed into another prime (16694620549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8347310024 + 8347310025.

It is an arithmetic number, because the mean of its divisors is an integer number (8347310025).

Almost surely, 2^16694620049 is an apocalyptic number.

It is an amenable number.

16694620049 is a deficient number, since it is larger than the sum of its proper divisors (1).

16694620049 is an equidigital number, since it uses as much as digits as its factorization.

16694620049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 16694620049 in words is "sixteen billion, six hundred ninety-four million, six hundred twenty thousand, forty-nine".