66122445156563 has 2 divisors, whose sum is σ = 66122445156564. Its totient is φ = 66122445156562.

The previous prime is 66122445156557. The next prime is 66122445156671. The reversal of 66122445156563 is 36565154422166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66122445156563 - 2⁸ = 66122445156307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66122445156499 and 66122445156508.

It is not a weakly prime, because it can be changed into another prime (66122445956563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33061222578281 + 33061222578282.

It is an arithmetic number, because the mean of its divisors is an integer number (33061222578282).

Almost surely, 2^{66122445156563} is an apocalyptic number.

66122445156563 is a deficient number, since it is larger than the sum of its proper divisors (1).

66122445156563 is an equidigital number, since it uses as much as digits as its factorization.

66122445156563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104000, while the sum is 56.

The spelling of 66122445156563 in words is "sixty-six trillion, one hundred twenty-two billion, four hundred forty-five million, one hundred fifty-six thousand, five hundred sixty-three".