66070667743 has 4 divisors (see below), whose sum is σ = 66125137768. Its totient is φ = 66016197720.

The previous prime is 66070667681. The next prime is 66070667771. The reversal of 66070667743 is 34776607066.

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

It is a cyclic number.

It is not a de Polignac number, because 66070667743 - 2⁹ = 66070667231 is a prime.

It is a super-4 number, since 4×66070667743⁴ (a number of 44 digits) contains 4444 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 (66070667843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27233193 + ... + 27235618.

It is an arithmetic number, because the mean of its divisors is an integer number (16531284442).

Almost surely, 2^66070667743 is an apocalyptic number.

66070667743 is a deficient number, since it is larger than the sum of its proper divisors (54470025).

66070667743 is a wasteful number, since it uses less digits than its factorization.

66070667743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54470024.

The product of its (nonzero) digits is 5334336, while the sum is 52.

The spelling of 66070667743 in words is "sixty-six billion, seventy million, six hundred sixty-seven thousand, seven hundred forty-three".