16612684043789 has 2 divisors, whose sum is σ = 16612684043790. Its totient is φ = 16612684043788.

The previous prime is 16612684043737. The next prime is 16612684043819. The reversal of 16612684043789 is 98734048621661.

16612684043789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12357263784100 + 4255420259689 = 3515290^2 + 2062867^2 .

It is a cyclic number.

It is not a de Polignac number, because 16612684043789 - 2²⁸ = 16612415608333 is a prime.

It is a super-2 number, since 2×16612684043789² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16612684043719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8306342021894 + 8306342021895.

It is an arithmetic number, because the mean of its divisors is an integer number (8306342021895).

Almost surely, 2^{16612684043789} is an apocalyptic number.

It is an amenable number.

16612684043789 is a deficient number, since it is larger than the sum of its proper divisors (1).

16612684043789 is an equidigital number, since it uses as much as digits as its factorization.

16612684043789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 83607552, while the sum is 65.

The spelling of 16612684043789 in words is "sixteen trillion, six hundred twelve billion, six hundred eighty-four million, forty-three thousand, seven hundred eighty-nine".