14196777945891 has 4 divisors (see below), whose sum is σ = 18929037261192. Its totient is φ = 9464518630592.

The previous prime is 14196777945887. The next prime is 14196777945913. The reversal of 14196777945891 is 19854977769141.

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

It is a cyclic number.

It is not a de Polignac number, because 14196777945891 - 2² = 14196777945887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (14196777943891) 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, 2366129657646 + ... + 2366129657651.

It is an arithmetic number, because the mean of its divisors is an integer number (4732259315298).

Almost surely, 2^{14196777945891} is an apocalyptic number.

14196777945891 is a deficient number, since it is larger than the sum of its proper divisors (4732259315301).

14196777945891 is an equidigital number, since it uses as much as digits as its factorization.

14196777945891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4732259315300.

The product of its digits is 960180480, while the sum is 78.

The spelling of 14196777945891 in words is "fourteen trillion, one hundred ninety-six billion, seven hundred seventy-seven million, nine hundred forty-five thousand, eight hundred ninety-one".