1266666346206 has 40 divisors (see below), whose sum is σ = 2842320030264. Its totient is φ = 421619763600.

The previous prime is 1266666346189. The next prime is 1266666346213. The reversal of 1266666346206 is 6026436666621.

It is a super-2 number, since 2×1266666346206² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5463420 + ... + 5690543.

Almost surely, 2^{1266666346206} is an apocalyptic number.

1266666346206 is an abundant number, since it is smaller than the sum of its proper divisors (1575653684058).

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

1266666346206 is a wasteful number, since it uses less digits than its factorization.

1266666346206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11154678 (or 11154669 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 54.

The spelling of 1266666346206 in words is "one trillion, two hundred sixty-six billion, six hundred sixty-six million, three hundred forty-six thousand, two hundred six".