10266666678 has 16 divisors (see below), whose sum is σ = 22814814960. Its totient is φ = 3422222208.

The previous prime is 10266666661. The next prime is 10266666679. The reversal of 10266666678 is 87666666201.

It is a super-4 number, since 4×10266666678⁴ (a number of 41 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 190123457 = 10266666678 / (1 + 0 + 2 + 6 + 6 + 6 + 6 + 6 + 6 + 7 + 8).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10266666679) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 95061675 + ... + 95061782.

It is an arithmetic number, because the mean of its divisors is an integer number (1425925935).

Almost surely, 2^10266666678 is an apocalyptic number.

10266666678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10266666678 is an abundant number, since it is smaller than the sum of its proper divisors (12548148282).

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

10266666678 is a wasteful number, since it uses less digits than its factorization.

10266666678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190123468 (or 190123462 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 10266666678 in words is "ten billion, two hundred sixty-six million, six hundred sixty-six thousand, six hundred seventy-eight".