14091712878666 has 16 divisors (see below), whose sum is σ = 28198204713504. Its totient is φ = 4694774466864.

The previous prime is 14091712878637. The next prime is 14091712878703. The reversal of 14091712878666 is 66687821719041.

It is a super-2 number, since 2×14091712878666² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 14091712878597 and 14091712878606.

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, 615777445 + ... + 615800328.

It is an arithmetic number, because the mean of its divisors is an integer number (1762387794594).

Almost surely, 2^{14091712878666} is an apocalyptic number.

14091712878666 is an abundant number, since it is smaller than the sum of its proper divisors (14106491834838).

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

14091712878666 is a wasteful number, since it uses less digits than its factorization.

14091712878666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231579685.

The product of its (nonzero) digits is 48771072, while the sum is 66.

The spelling of 14091712878666 in words is "fourteen trillion, ninety-one billion, seven hundred twelve million, eight hundred seventy-eight thousand, six hundred sixty-six".