66414675499 has 2 divisors, whose sum is σ = 66414675500. Its totient is φ = 66414675498.

The previous prime is 66414675487. The next prime is 66414675517. The reversal of 66414675499 is 99457641466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66414675499 - 2¹⁵ = 66414642731 is a prime.

It is not a weakly prime, because it can be changed into another prime (66414675449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33207337749 + 33207337750.

It is an arithmetic number, because the mean of its divisors is an integer number (33207337750).

Almost surely, 2^66414675499 is an apocalyptic number.

66414675499 is a deficient number, since it is larger than the sum of its proper divisors (1).

66414675499 is an equidigital number, since it uses as much as digits as its factorization.

66414675499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39191040, while the sum is 61.

The spelling of 66414675499 in words is "sixty-six billion, four hundred fourteen million, six hundred seventy-five thousand, four hundred ninety-nine".