1266830331676 has 24 divisors (see below), whose sum is σ = 2728557638240. Its totient is φ = 501163647552.

The previous prime is 1266830331673. The next prime is 1266830331703. The reversal of 1266830331676 is 6761330386621.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266830331673) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1740151191 + ... + 1740151918.

Almost surely, 2^{1266830331676} is an apocalyptic number.

It is an amenable number.

1266830331676 is an abundant number, since it is smaller than the sum of its proper divisors (1461727306564).

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

1266830331676 is a wasteful number, since it uses less digits than its factorization.

1266830331676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3480303133 (or 3480303131 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 52.

Subtracting 1266830331676 from its reverse (6761330386621), we obtain a palindrome (5494500054945).

The spelling of 1266830331676 in words is "one trillion, two hundred sixty-six billion, eight hundred thirty million, three hundred thirty-one thousand, six hundred seventy-six".