13656972242 has 8 divisors (see below), whose sum is σ = 20485989516. Its totient is φ = 6828309072.

The previous prime is 13656972229. The next prime is 13656972271. The reversal of 13656972242 is 24227965631.

13656972242 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 2 ways, for example, as 11882962081 + 1774010161 = 109009^2 + 42119^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 53408 + ... + 173684.

Almost surely, 2^13656972242 is an apocalyptic number.

13656972242 is a deficient number, since it is larger than the sum of its proper divisors (6829017274).

13656972242 is a wasteful number, since it uses less digits than its factorization.

13656972242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177052.

The product of its digits is 1088640, while the sum is 47.

The spelling of 13656972242 in words is "thirteen billion, six hundred fifty-six million, nine hundred seventy-two thousand, two hundred forty-two".