13972623746 has 4 divisors (see below), whose sum is σ = 20958935622. Its totient is φ = 6986311872.

The previous prime is 13972623737. The next prime is 13972623751. The reversal of 13972623746 is 64732627931.

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

It can be written as a sum of positive squares in only one way, i.e., 12960684025 + 1011939721 = 113845^2 + 31811^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13972623694 and 13972623703.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3493155935 + ... + 3493155938.

Almost surely, 2^13972623746 is an apocalyptic number.

13972623746 is a deficient number, since it is larger than the sum of its proper divisors (6986311876).

13972623746 is an equidigital number, since it uses as much as digits as its factorization.

13972623746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6986311875.

The product of its digits is 2286144, while the sum is 50.

The spelling of 13972623746 in words is "thirteen billion, nine hundred seventy-two million, six hundred twenty-three thousand, seven hundred forty-six".