13406666676 has 48 divisors (see below), whose sum is σ = 33708515904. Its totient is φ = 4122683136.

The previous prime is 13406666671. The next prime is 13406666699. The reversal of 13406666676 is 67666660431.

It is a happy number.

It is a super-2 number, since 2×13406666676² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13406666671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247936 + ... + 297128.

It is an arithmetic number, because the mean of its divisors is an integer number (702260748).

Almost surely, 2^13406666676 is an apocalyptic number.

It is an amenable number.

13406666676 is an abundant number, since it is smaller than the sum of its proper divisors (20301849228).

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

13406666676 is a wasteful number, since it uses less digits than its factorization.

13406666676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50960 (or 50958 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 51.

The spelling of 13406666676 in words is "thirteen billion, four hundred six million, six hundred sixty-six thousand, six hundred seventy-six".