66462226417 has 2 divisors, whose sum is σ = 66462226418. Its totient is φ = 66462226416.

The previous prime is 66462226409. The next prime is 66462226429. The reversal of 66462226417 is 71462226466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41701315681 + 24760910736 = 204209^2 + 157356^2 .

It is a cyclic number.

It is not a de Polignac number, because 66462226417 - 2³ = 66462226409 is a prime.

It is not a weakly prime, because it can be changed into another prime (66462226217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33231113208 + 33231113209.

It is an arithmetic number, because the mean of its divisors is an integer number (33231113209).

Almost surely, 2^66462226417 is an apocalyptic number.

It is an amenable number.

66462226417 is a deficient number, since it is larger than the sum of its proper divisors (1).

66462226417 is an equidigital number, since it uses as much as digits as its factorization.

66462226417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 46.

The spelling of 66462226417 in words is "sixty-six billion, four hundred sixty-two million, two hundred twenty-six thousand, four hundred seventeen".