15553993249 has 8 divisors (see below), whose sum is σ = 15935028480. Its totient is φ = 15173037600.

The previous prime is 15553993201. The next prime is 15553993309. The reversal of 15553993249 is 94239935551.

15553993249 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 a cyclic number.

It is not a de Polignac number, because 15553993249 - 2³¹ = 13406509601 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 15553993249.

It is not an unprimeable number, because it can be changed into a prime (15553993849) 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, 640764 + ... + 664594.

It is an arithmetic number, because the mean of its divisors is an integer number (1991878560).

Almost surely, 2^15553993249 is an apocalyptic number.

It is an amenable number.

15553993249 is a deficient number, since it is larger than the sum of its proper divisors (381035231).

15553993249 is a wasteful number, since it uses less digits than its factorization.

15553993249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39791.

The product of its digits is 6561000, while the sum is 55.

The spelling of 15553993249 in words is "fifteen billion, five hundred fifty-three million, nine hundred ninety-three thousand, two hundred forty-nine".