66743743701 has 4 divisors (see below), whose sum is σ = 88991658272. Its totient is φ = 44495829132.

The previous prime is 66743743681. The next prime is 66743743747. The reversal of 66743743701 is 10734734766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 66743743701 - 2⁹ = 66743743189 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 (66743743201) 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, 11123957281 + ... + 11123957286.

It is an arithmetic number, because the mean of its divisors is an integer number (22247914568).

Almost surely, 2^66743743701 is an apocalyptic number.

It is an amenable number.

66743743701 is a deficient number, since it is larger than the sum of its proper divisors (22247914571).

66743743701 is a wasteful number, since it uses less digits than its factorization.

66743743701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22247914570.

The product of its (nonzero) digits is 1778112, while the sum is 48.

The spelling of 66743743701 in words is "sixty-six billion, seven hundred forty-three million, seven hundred forty-three thousand, seven hundred one".