13531944751 has 20 divisors (see below), whose sum is σ = 14807867544. Its totient is φ = 12364716000.

The previous prime is 13531944749. The next prime is 13531944787. The reversal of 13531944751 is 15744913531.

13531944751 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13531944751 - 2¹ = 13531944749 is a prime.

It is a super-2 number, since 2×13531944751² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13531944698 and 13531944707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531944721) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 2882316 + ... + 2887006.

Almost surely, 2^13531944751 is an apocalyptic number.

13531944751 is a deficient number, since it is larger than the sum of its proper divisors (1275922793).

13531944751 is an frugal number, since it uses more digits than its factorization.

13531944751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4844 (or 4805 counting only the distinct ones).

The product of its digits is 226800, while the sum is 43.

The spelling of 13531944751 in words is "thirteen billion, five hundred thirty-one million, nine hundred forty-four thousand, seven hundred fifty-one".