13756771123201 has 4 divisors (see below), whose sum is σ = 13756778546004. Its totient is φ = 13756763700400.

The previous prime is 13756771123181. The next prime is 13756771123211. The reversal of 13756771123201 is 10232117765731.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6503035511025 + 7253735612176 = 2550105^2 + 2693276^2 .

It is a cyclic number.

It is not a de Polignac number, because 13756771123201 - 2¹⁹ = 13756770598913 is a prime.

It is a super-2 number, since 2×13756771123201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13756771123211) 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, 1655991 + ... + 5500531.

It is an arithmetic number, because the mean of its divisors is an integer number (3439194636501).

Almost surely, 2^{13756771123201} is an apocalyptic number.

It is an amenable number.

13756771123201 is a deficient number, since it is larger than the sum of its proper divisors (7422803).

13756771123201 is an equidigital number, since it uses as much as digits as its factorization.

13756771123201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7422802.

The product of its (nonzero) digits is 370440, while the sum is 46.

Adding to 13756771123201 its reverse (10232117765731), we get a palindrome (23988888888932).

The spelling of 13756771123201 in words is "thirteen trillion, seven hundred fifty-six billion, seven hundred seventy-one million, one hundred twenty-three thousand, two hundred one".