66407226499 has 2 divisors, whose sum is σ = 66407226500. Its totient is φ = 66407226498.

The previous prime is 66407226467. The next prime is 66407226517. The reversal of 66407226499 is 99462270466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66407226499 - 2⁵ = 66407226467 is a prime.

It is not a weakly prime, because it can be changed into another prime (66407226799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33203613249 + 33203613250.

It is an arithmetic number, because the mean of its divisors is an integer number (33203613250).

Almost surely, 2^66407226499 is an apocalyptic number.

66407226499 is a deficient number, since it is larger than the sum of its proper divisors (1).

66407226499 is an equidigital number, since it uses as much as digits as its factorization.

66407226499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7838208, while the sum is 55.

The spelling of 66407226499 in words is "sixty-six billion, four hundred seven million, two hundred twenty-six thousand, four hundred ninety-nine".