667987911343 has 2 divisors, whose sum is σ = 667987911344. Its totient is φ = 667987911342.

The previous prime is 667987911301. The next prime is 667987911377. The reversal of 667987911343 is 343119789766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667987911343 - 2¹³ = 667987903151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667987912343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333993955671 + 333993955672.

It is an arithmetic number, because the mean of its divisors is an integer number (333993955672).

Almost surely, 2^667987911343 is an apocalyptic number.

667987911343 is a deficient number, since it is larger than the sum of its proper divisors (1).

667987911343 is an equidigital number, since it uses as much as digits as its factorization.

667987911343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41150592, while the sum is 64.

The spelling of 667987911343 in words is "six hundred sixty-seven billion, nine hundred eighty-seven million, nine hundred eleven thousand, three hundred forty-three".