2631445612667 has 2 divisors, whose sum is σ = 2631445612668. Its totient is φ = 2631445612666.

The previous prime is 2631445612651. The next prime is 2631445612727. The reversal of 2631445612667 is 7662165441362.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2631445612667 - 2⁴ = 2631445612651 is a prime.

It is not a weakly prime, because it can be changed into another prime (2631445612637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1315722806333 + 1315722806334.

It is an arithmetic number, because the mean of its divisors is an integer number (1315722806334).

Almost surely, 2^{2631445612667} is an apocalyptic number.

2631445612667 is a deficient number, since it is larger than the sum of its proper divisors (1).

2631445612667 is an equidigital number, since it uses as much as digits as its factorization.

2631445612667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8709120, while the sum is 53.

The spelling of 2631445612667 in words is "two trillion, six hundred thirty-one billion, four hundred forty-five million, six hundred twelve thousand, six hundred sixty-seven".