3975843715567 has 2 divisors, whose sum is σ = 3975843715568. Its totient is φ = 3975843715566.

The previous prime is 3975843715561. The next prime is 3975843715583. The reversal of 3975843715567 is 7655173485793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3975843715567 - 2²³ = 3975835326959 is a prime.

It is a super-2 number, since 2×3975843715567² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3975843715496 and 3975843715505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3975843715561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1987921857783 + 1987921857784.

It is an arithmetic number, because the mean of its divisors is an integer number (1987921857784).

Almost surely, 2^{3975843715567} is an apocalyptic number.

3975843715567 is a deficient number, since it is larger than the sum of its proper divisors (1).

3975843715567 is an equidigital number, since it uses as much as digits as its factorization.

3975843715567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 666792000, while the sum is 70.

The spelling of 3975843715567 in words is "three trillion, nine hundred seventy-five billion, eight hundred forty-three million, seven hundred fifteen thousand, five hundred sixty-seven".