14981668491 has 4 divisors (see below), whose sum is σ = 19975557992. Its totient is φ = 9987778992.

The previous prime is 14981668477. The next prime is 14981668517. The reversal of 14981668491 is 19486618941.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 14981668491 - 2¹³ = 14981660299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14981661491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2496944746 + ... + 2496944751.

It is an arithmetic number, because the mean of its divisors is an integer number (4993889498).

Almost surely, 2^14981668491 is an apocalyptic number.

14981668491 is a deficient number, since it is larger than the sum of its proper divisors (4993889501).

14981668491 is an equidigital number, since it uses as much as digits as its factorization.

14981668491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4993889500.

The product of its digits is 2985984, while the sum is 57.

The spelling of 14981668491 in words is "fourteen billion, nine hundred eighty-one million, six hundred sixty-eight thousand, four hundred ninety-one".