13941781066 has 16 divisors (see below), whose sum is σ = 21281097600. Its totient is φ = 6848237248.

The previous prime is 13941781043. The next prime is 13941781067. The reversal of 13941781066 is 66018714931.

It is not an unprimeable number, because it can be changed into a prime (13941781067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145215 + ... + 221293.

It is an arithmetic number, because the mean of its divisors is an integer number (1330068600).

Almost surely, 2^13941781066 is an apocalyptic number.

13941781066 is a deficient number, since it is larger than the sum of its proper divisors (7339316534).

13941781066 is a wasteful number, since it uses less digits than its factorization.

13941781066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77693.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 13941781066 in words is "thirteen billion, nine hundred forty-one million, seven hundred eighty-one thousand, sixty-six".