3945747966343 has 16 divisors (see below), whose sum is σ = 4193078032000. Its totient is φ = 3702409251552.

The previous prime is 3945747966337. The next prime is 3945747966397. The reversal of 3945747966343 is 3436697475493.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3945747966343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3945747961343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5254288 + ... + 5958106.

It is an arithmetic number, because the mean of its divisors is an integer number (262067377000).

Almost surely, 2^{3945747966343} is an apocalyptic number.

3945747966343 is a deficient number, since it is larger than the sum of its proper divisors (247330065657).

3945747966343 is a wasteful number, since it uses less digits than its factorization.

3945747966343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706654.

The product of its digits is 1234517760, while the sum is 70.

The spelling of 3945747966343 in words is "three trillion, nine hundred forty-five billion, seven hundred forty-seven million, nine hundred sixty-six thousand, three hundred forty-three".