66222172162037 has 2 divisors, whose sum is σ = 66222172162038. Its totient is φ = 66222172162036.

The previous prime is 66222172162019. The next prime is 66222172162043. The reversal of 66222172162037 is 73026127122266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53838818200036 + 12383353962001 = 7337494^2 + 3518999^2 .

It is a cyclic number.

It is not a de Polignac number, because 66222172162037 - 2⁶ = 66222172161973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66222172161982 and 66222172162000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66222172164037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33111086081018 + 33111086081019.

It is an arithmetic number, because the mean of its divisors is an integer number (33111086081019).

Almost surely, 2^{66222172162037} is an apocalyptic number.

It is an amenable number.

66222172162037 is a deficient number, since it is larger than the sum of its proper divisors (1).

66222172162037 is an equidigital number, since it uses as much as digits as its factorization.

66222172162037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 47.

The spelling of 66222172162037 in words is "sixty-six trillion, two hundred twenty-two billion, one hundred seventy-two million, one hundred sixty-two thousand, thirty-seven".