14891866661 has 8 divisors (see below), whose sum is σ = 17040268224. Its totient is φ = 12748713120.

The previous prime is 14891866657. The next prime is 14891866667. The reversal of 14891866661 is 16666819841.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 14891866661 - 2² = 14891866657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 14891866597 and 14891866606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14891866667) 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, 1305920 + ... + 1317273.

It is an arithmetic number, because the mean of its divisors is an integer number (2130033528).

Almost surely, 2^14891866661 is an apocalyptic number.

It is an amenable number.

14891866661 is a deficient number, since it is larger than the sum of its proper divisors (2148401563).

14891866661 is an equidigital number, since it uses as much as digits as its factorization.

14891866661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624011.

The product of its digits is 2985984, while the sum is 56.

The spelling of 14891866661 in words is "fourteen billion, eight hundred ninety-one million, eight hundred sixty-six thousand, six hundred sixty-one".