2666623204336 has 80 divisors (see below), whose sum is σ = 6359169417664. Its totient is φ = 1054878308352.

The previous prime is 2666623204331. The next prime is 2666623204361. The reversal of 2666623204336 is 6334023266662.

It is a super-2 number, since 2×2666623204336² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2666623204336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666623204331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56290036 + ... + 56337388.

Almost surely, 2^{2666623204336} is an apocalyptic number.

2666623204336 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2666623204336 is an abundant number, since it is smaller than the sum of its proper divisors (3692546213328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2666623204336 is a wasteful number, since it uses less digits than its factorization.

2666623204336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86058 (or 86052 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 49.

The spelling of 2666623204336 in words is "two trillion, six hundred sixty-six billion, six hundred twenty-three million, two hundred four thousand, three hundred thirty-six".