3971133366243 has 8 divisors (see below), whose sum is σ = 5297035165968. Its totient is φ = 2646326905344.

The previous prime is 3971133366191. The next prime is 3971133366247. The reversal of 3971133366243 is 3426633311793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3971133366243 - 2²⁰ = 3971132317667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3971133366247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273826246 + ... + 273840747.

It is an arithmetic number, because the mean of its divisors is an integer number (662129395746).

Almost surely, 2^{3971133366243} is an apocalyptic number.

3971133366243 is a deficient number, since it is larger than the sum of its proper divisors (1325901799725).

3971133366243 is a wasteful number, since it uses less digits than its factorization.

3971133366243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547669413.

The product of its digits is 4408992, while the sum is 51.

The spelling of 3971133366243 in words is "three trillion, nine hundred seventy-one billion, one hundred thirty-three million, three hundred sixty-six thousand, two hundred forty-three".