13756721201 has 4 divisors (see below), whose sum is σ = 13757372400. Its totient is φ = 13756070004.

The previous prime is 13756721191. The next prime is 13756721263. The reversal of 13756721201 is 10212765731.

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 13756721201 - 2¹⁴ = 13756704817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13756721501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292811 + ... + 336528.

It is an arithmetic number, because the mean of its divisors is an integer number (3439343100).

Almost surely, 2^13756721201 is an apocalyptic number.

It is an amenable number.

13756721201 is a deficient number, since it is larger than the sum of its proper divisors (651199).

13756721201 is an equidigital number, since it uses as much as digits as its factorization.

13756721201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651198.

The product of its (nonzero) digits is 17640, while the sum is 35.

The spelling of 13756721201 in words is "thirteen billion, seven hundred fifty-six million, seven hundred twenty-one thousand, two hundred one".