3708666666431 has 4 divisors (see below), whose sum is σ = 3709307091264. Its totient is φ = 3708026241600.

The previous prime is 3708666666337. The next prime is 3708666666437. The reversal of 3708666666431 is 1346666668073.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3708666666431 is a prime.

It is a super-2 number, since 2×3708666666431² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3708666666437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320203730 + ... + 320215311.

It is an arithmetic number, because the mean of its divisors is an integer number (927326772816).

Almost surely, 2^{3708666666431} is an apocalyptic number.

3708666666431 is a deficient number, since it is larger than the sum of its proper divisors (640424833).

3708666666431 is an equidigital number, since it uses as much as digits as its factorization.

3708666666431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640424832.

The product of its (nonzero) digits is 94058496, while the sum is 62.

The spelling of 3708666666431 in words is "three trillion, seven hundred eight billion, six hundred sixty-six million, six hundred sixty-six thousand, four hundred thirty-one".