13521374281 has 2 divisors, whose sum is σ = 13521374282. Its totient is φ = 13521374280.

The previous prime is 13521374233. The next prime is 13521374287. The reversal of 13521374281 is 18247312531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8820215056 + 4701159225 = 93916^2 + 68565^2 .

It is a cyclic number.

It is not a de Polignac number, because 13521374281 - 2²⁹ = 12984503369 is a prime.

It is a super-2 number, since 2×13521374281² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13521374281.

It is not a weakly prime, because it can be changed into another prime (13521374287) 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 as a sum of consecutive naturals, namely, 6760687140 + 6760687141.

It is an arithmetic number, because the mean of its divisors is an integer number (6760687141).

Almost surely, 2^13521374281 is an apocalyptic number.

It is an amenable number.

13521374281 is a deficient number, since it is larger than the sum of its proper divisors (1).

13521374281 is an equidigital number, since it uses as much as digits as its factorization.

13521374281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 37.

The spelling of 13521374281 in words is "thirteen billion, five hundred twenty-one million, three hundred seventy-four thousand, two hundred eighty-one".