3943922684671 has 2 divisors, whose sum is σ = 3943922684672. Its totient is φ = 3943922684670.

The previous prime is 3943922684621. The next prime is 3943922684699. The reversal of 3943922684671 is 1764862293493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3943922684671 - 2⁷ = 3943922684543 is a prime.

It is a super-2 number, since 2×3943922684671² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3943922684621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1971961342335 + 1971961342336.

It is an arithmetic number, because the mean of its divisors is an integer number (1971961342336).

Almost surely, 2^{3943922684671} is an apocalyptic number.

3943922684671 is a deficient number, since it is larger than the sum of its proper divisors (1).

3943922684671 is an equidigital number, since it uses as much as digits as its factorization.

3943922684671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94058496, while the sum is 64.

The spelling of 3943922684671 in words is "three trillion, nine hundred forty-three billion, nine hundred twenty-two million, six hundred eighty-four thousand, six hundred seventy-one".