66600060619 has 2 divisors, whose sum is σ = 66600060620. Its totient is φ = 66600060618.

The previous prime is 66600060613. The next prime is 66600060691. The reversal of 66600060619 is 91606000666.

It is a happy number.

66600060619 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (66600060691) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66600060619 - 2²³ = 66591672011 is a prime.

It is a super-2 number, since 2×66600060619² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (66600060613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33300030309 + 33300030310.

It is an arithmetic number, because the mean of its divisors is an integer number (33300030310).

Almost surely, 2^66600060619 is an apocalyptic number.

66600060619 is a deficient number, since it is larger than the sum of its proper divisors (1).

66600060619 is an equidigital number, since it uses as much as digits as its factorization.

66600060619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 40.

The spelling of 66600060619 in words is "sixty-six billion, six hundred million, sixty thousand, six hundred nineteen".