13680437377 has 4 divisors (see below), whose sum is σ = 13687324336. Its totient is φ = 13673550420.

The previous prime is 13680437369. The next prime is 13680437383. The reversal of 13680437377 is 77373408631.

It is a happy number.

13680437377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13680437377 - 2³ = 13680437369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13680437377.

It is not an unprimeable number, because it can be changed into a prime (13680437677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3440499 + ... + 3444472.

It is an arithmetic number, because the mean of its divisors is an integer number (3421831084).

Almost surely, 2^13680437377 is an apocalyptic number.

It is an amenable number.

13680437377 is a deficient number, since it is larger than the sum of its proper divisors (6886959).

13680437377 is an equidigital number, since it uses as much as digits as its factorization.

13680437377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6886958.

The product of its (nonzero) digits is 1778112, while the sum is 49.

The spelling of 13680437377 in words is "thirteen billion, six hundred eighty million, four hundred thirty-seven thousand, three hundred seventy-seven".