13687751956 has 6 divisors (see below), whose sum is σ = 23953565930. Its totient is φ = 6843875976.

The previous prime is 13687751953. The next prime is 13687751989. The reversal of 13687751956 is 65915778631.

It is a happy number.

13687751956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9708160900 + 3979591056 = 98530^2 + 63084^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13687751956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13687751953) 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 as a sum of consecutive naturals, namely, 1710968991 + ... + 1710968998.

Almost surely, 2^13687751956 is an apocalyptic number.

It is an amenable number.

13687751956 is a deficient number, since it is larger than the sum of its proper divisors (10265813974).

13687751956 is a wasteful number, since it uses less digits than its factorization.

13687751956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3421937993 (or 3421937991 counting only the distinct ones).

The product of its digits is 9525600, while the sum is 58.

It can be divided in two parts, 1368775 and 1956, that added together give a palindrome (1370731).

The spelling of 13687751956 in words is "thirteen billion, six hundred eighty-seven million, seven hundred fifty-one thousand, nine hundred fifty-six".