2666690835264 has 224 divisors, whose sum is σ = 7930639155200. Its totient is φ = 878623925760.

The previous prime is 2666690835229. The next prime is 2666690835283. The reversal of 2666690835264 is 4625380966662.

It is a happy number.

It is a super-2 number, since 2×2666690835264² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 59450157 + ... + 59494995.

Almost surely, 2^{2666690835264} is an apocalyptic number.

2666690835264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2666690835264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3965319577600).

2666690835264 is an abundant number, since it is smaller than the sum of its proper divisors (5263948319936).

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

2666690835264 is a wasteful number, since it uses less digits than its factorization.

2666690835264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45258 (or 45242 counting only the distinct ones).

The product of its (nonzero) digits is 134369280, while the sum is 63.

The spelling of 2666690835264 in words is "two trillion, six hundred sixty-six billion, six hundred ninety million, eight hundred thirty-five thousand, two hundred sixty-four".