13531220733 has 8 divisors (see below), whose sum is σ = 18049040608. Its totient is φ = 9017107344.

The previous prime is 13531220723. The next prime is 13531220741. The reversal of 13531220733 is 33702213531.

13531220733 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13531220733 - 2¹⁷ = 13531089661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13531220733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531220723) 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 7 ways as a sum of consecutive naturals, for example, 918091 + ... + 932712.

It is an arithmetic number, because the mean of its divisors is an integer number (2256130076).

Almost surely, 2^13531220733 is an apocalyptic number.

It is an amenable number.

13531220733 is a deficient number, since it is larger than the sum of its proper divisors (4517819875).

13531220733 is a wasteful number, since it uses less digits than its factorization.

13531220733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853243.

The product of its (nonzero) digits is 11340, while the sum is 30.

The spelling of 13531220733 in words is "thirteen billion, five hundred thirty-one million, two hundred twenty thousand, seven hundred thirty-three".