3437664867991 has 2 divisors, whose sum is σ = 3437664867992. Its totient is φ = 3437664867990.

The previous prime is 3437664867941. The next prime is 3437664868013. The reversal of 3437664867991 is 1997684667343.

3437664867991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3437664867991 - 2²⁵ = 3437631313559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3437664867941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1718832433995 + 1718832433996.

It is an arithmetic number, because the mean of its divisors is an integer number (1718832433996).

Almost surely, 2^{3437664867991} is an apocalyptic number.

3437664867991 is a deficient number, since it is larger than the sum of its proper divisors (1).

3437664867991 is an equidigital number, since it uses as much as digits as its factorization.

3437664867991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 987614208, while the sum is 73.

The spelling of 3437664867991 in words is "three trillion, four hundred thirty-seven billion, six hundred sixty-four million, eight hundred sixty-seven thousand, nine hundred ninety-one".