3971495856467 has 2 divisors, whose sum is σ = 3971495856468. Its totient is φ = 3971495856466.

The previous prime is 3971495856463. The next prime is 3971495856499. The reversal of 3971495856467 is 7646585941793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3971495856467 - 2² = 3971495856463 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3971495856394 and 3971495856403.

It is not a weakly prime, because it can be changed into another prime (3971495856463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1985747928233 + 1985747928234.

It is an arithmetic number, because the mean of its divisors is an integer number (1985747928234).

Almost surely, 2^{3971495856467} is an apocalyptic number.

3971495856467 is a deficient number, since it is larger than the sum of its proper divisors (1).

3971495856467 is an equidigital number, since it uses as much as digits as its factorization.

3971495856467 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1371686400, while the sum is 74.

The spelling of 3971495856467 in words is "three trillion, nine hundred seventy-one billion, four hundred ninety-five million, eight hundred fifty-six thousand, four hundred sixty-seven".