16526166457 has 2 divisors, whose sum is σ = 16526166458. Its totient is φ = 16526166456.

The previous prime is 16526166431. The next prime is 16526166473. The reversal of 16526166457 is 75466162561.

16526166457 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., 12246520896 + 4279645561 = 110664^2 + 65419^2 .

It is a cyclic number.

It is not a de Polignac number, because 16526166457 - 2²³ = 16517777849 is a prime.

It is a super-2 number, since 2×16526166457² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16526166457.

It is not a weakly prime, because it can be changed into another prime (16526166487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8263083228 + 8263083229.

It is an arithmetic number, because the mean of its divisors is an integer number (8263083229).

Almost surely, 2^16526166457 is an apocalyptic number.

It is an amenable number.

16526166457 is a deficient number, since it is larger than the sum of its proper divisors (1).

16526166457 is an equidigital number, since it uses as much as digits as its factorization.

16526166457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1814400, while the sum is 49.

The spelling of 16526166457 in words is "sixteen billion, five hundred twenty-six million, one hundred sixty-six thousand, four hundred fifty-seven".