12762266868 has 216 divisors, whose sum is σ = 36373349376. Its totient is φ = 3767212800.

The previous prime is 12762266857. The next prime is 12762266903. The reversal of 12762266868 is 86866226721.

12762266868 is a `hidden beast` number, since 1 + 2 + 7 + 622 + 6 + 6 + 8 + 6 + 8 = 666.

It is a super-2 number, since 2×12762266868² (a number of 21 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 71 ways as a sum of consecutive naturals, for example, 29610613 + ... + 29611043.

It is an arithmetic number, because the mean of its divisors is an integer number (168395136).

Almost surely, 2^12762266868 is an apocalyptic number.

12762266868 is a gapful number since it is divisible by the number (18) 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 12762266868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18186674688).

12762266868 is an abundant number, since it is smaller than the sum of its proper divisors (23611082508).

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

12762266868 is a wasteful number, since it uses less digits than its factorization.

12762266868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 637 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 12762266868 in words is "twelve billion, seven hundred sixty-two million, two hundred sixty-six thousand, eight hundred sixty-eight".