13045840666 has 16 divisors (see below), whose sum is σ = 19988519040. Its totient is φ = 6383048320.

The previous prime is 13045840657. The next prime is 13045840697. The reversal of 13045840666 is 66604854031.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1025706 + ... + 1038346.

It is an arithmetic number, because the mean of its divisors is an integer number (1249282440).

Almost surely, 2^13045840666 is an apocalyptic number.

13045840666 is a deficient number, since it is larger than the sum of its proper divisors (6942678374).

13045840666 is a wasteful number, since it uses less digits than its factorization.

13045840666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23669.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 13045840666 in words is "thirteen billion, forty-five million, eight hundred forty thousand, six hundred sixty-six".