3766643207243 has 4 divisors (see below), whose sum is σ = 4304735094000. Its totient is φ = 3228551320488.

The previous prime is 3766643207207. The next prime is 3766643207269. The reversal of 3766643207243 is 3427023466673.

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 3766643207243 - 2²⁰ = 3766642158667 is a prime.

It is a super-3 number, since 3×3766643207243³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3766643207273) 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, 269045943368 + ... + 269045943381.

It is an arithmetic number, because the mean of its divisors is an integer number (1076183773500).

Almost surely, 2^{3766643207243} is an apocalyptic number.

3766643207243 is a deficient number, since it is larger than the sum of its proper divisors (538091886757).

3766643207243 is an equidigital number, since it uses as much as digits as its factorization.

3766643207243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538091886756.

The product of its (nonzero) digits is 18289152, while the sum is 53.

The spelling of 3766643207243 in words is "three trillion, seven hundred sixty-six billion, six hundred forty-three million, two hundred seven thousand, two hundred forty-three".