2662686862663 has 4 divisors (see below), whose sum is σ = 2665269489168. Its totient is φ = 2660104236160.

The previous prime is 2662686862639. The next prime is 2662686862679. The reversal of 2662686862663 is 3662686862662.

2662686862663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2662686862663 - 2¹⁷ = 2662686731591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2662686862163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1291311706 + ... + 1291313767.

It is an arithmetic number, because the mean of its divisors is an integer number (666317372292).

Almost surely, 2^{2662686862663} is an apocalyptic number.

2662686862663 is a deficient number, since it is larger than the sum of its proper divisors (2582626505).

2662686862663 is a wasteful number, since it uses less digits than its factorization.

2662686862663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582626504.

The product of its digits is 429981696, while the sum is 67.

Subtracting 2662686862663 from its reverse (3662686862662), we obtain a palindrome (999999999999).

The spelling of 2662686862663 in words is "two trillion, six hundred sixty-two billion, six hundred eighty-six million, eight hundred sixty-two thousand, six hundred sixty-three".