66674709359 has 16 divisors (see below), whose sum is σ = 71620489152. Its totient is φ = 61844041728.

The previous prime is 66674709331. The next prime is 66674709371. The reversal of 66674709359 is 95390747666.

It is a cyclic number.

It is not a de Polignac number, because 66674709359 - 2⁸ = 66674709103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66674709259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1596407 + ... + 1637639.

It is an arithmetic number, because the mean of its divisors is an integer number (4476280572).

Almost surely, 2^66674709359 is an apocalyptic number.

66674709359 is a deficient number, since it is larger than the sum of its proper divisors (4945779793).

66674709359 is a wasteful number, since it uses less digits than its factorization.

66674709359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42626.

The product of its (nonzero) digits is 51438240, while the sum is 62.

The spelling of 66674709359 in words is "sixty-six billion, six hundred seventy-four million, seven hundred nine thousand, three hundred fifty-nine".