14145877691 has 4 divisors (see below), whose sum is σ = 15431866584. Its totient is φ = 12859888800.

The previous prime is 14145877651. The next prime is 14145877721. The reversal of 14145877691 is 19677854141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19677854141 = 11 ⋅1788895831.

It is not a de Polignac number, because 14145877691 - 2¹⁴ = 14145861307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14145877621) 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, 642994430 + ... + 642994451.

It is an arithmetic number, because the mean of its divisors is an integer number (3857966646).

Almost surely, 2^14145877691 is an apocalyptic number.

14145877691 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

14145877691 is a deficient number, since it is larger than the sum of its proper divisors (1285988893).

14145877691 is a wasteful number, since it uses less digits than its factorization.

14145877691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285988892.

The product of its digits is 1693440, while the sum is 53.

The spelling of 14145877691 in words is "fourteen billion, one hundred forty-five million, eight hundred seventy-seven thousand, six hundred ninety-one".