16745555557 has 2 divisors, whose sum is σ = 16745555558. Its totient is φ = 16745555556.

The previous prime is 16745555531. The next prime is 16745555573. The reversal of 16745555557 is 75555554761.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13864120516 + 2881435041 = 117746^2 + 53679^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16745555557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16745555498 and 16745555507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16745555657) 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, 8372777778 + 8372777779.

It is an arithmetic number, because the mean of its divisors is an integer number (8372777779).

Almost surely, 2^16745555557 is an apocalyptic number.

It is an amenable number.

16745555557 is a deficient number, since it is larger than the sum of its proper divisors (1).

16745555557 is an equidigital number, since it uses as much as digits as its factorization.

16745555557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18375000, while the sum is 55.

The spelling of 16745555557 in words is "sixteen billion, seven hundred forty-five million, five hundred fifty-five thousand, five hundred fifty-seven".