66374230987 has 2 divisors, whose sum is σ = 66374230988. Its totient is φ = 66374230986.

The previous prime is 66374230969. The next prime is 66374231017. The reversal of 66374230987 is 78903247366.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66374230987 is a prime.

It is not a weakly prime, because it can be changed into another prime (66374230187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33187115493 + 33187115494.

It is an arithmetic number, because the mean of its divisors is an integer number (33187115494).

Almost surely, 2^66374230987 is an apocalyptic number.

66374230987 is a deficient number, since it is larger than the sum of its proper divisors (1).

66374230987 is an equidigital number, since it uses as much as digits as its factorization.

66374230987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9144576, while the sum is 55.

The spelling of 66374230987 in words is "sixty-six billion, three hundred seventy-four million, two hundred thirty thousand, nine hundred eighty-seven".