66875374539338 has 16 divisors (see below), whose sum is σ = 105592947357120. Its totient is φ = 31677733777536.

The previous prime is 66875374539313. The next prime is 66875374539343. The reversal of 66875374539338 is 83393547357866.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16206170 + ... + 19909562.

It is an arithmetic number, because the mean of its divisors is an integer number (6599559209820).

Almost surely, 2^{66875374539338} is an apocalyptic number.

66875374539338 is a deficient number, since it is larger than the sum of its proper divisors (38717572817782).

66875374539338 is a wasteful number, since it uses less digits than its factorization.

66875374539338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178621.

The product of its digits is 8230118400, while the sum is 77.

The spelling of 66875374539338 in words is "sixty-six trillion, eight hundred seventy-five billion, three hundred seventy-four million, five hundred thirty-nine thousand, three hundred thirty-eight".