16315513553 has 8 divisors (see below), whose sum is σ = 16501804200. Its totient is φ = 16129289088.

The previous prime is 16315513523. The next prime is 16315513561. The reversal of 16315513553 is 35531551361.

It can be written as a sum of positive squares in 4 ways, for example, as 49729 + 16315463824 = 223^2 + 127732^2 .

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 16315513553 - 2¹⁰ = 16315512529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16315513523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 616175 + ... + 642107.

It is an arithmetic number, because the mean of its divisors is an integer number (2062725525).

Almost surely, 2^16315513553 is an apocalyptic number.

It is an amenable number.

16315513553 is a deficient number, since it is larger than the sum of its proper divisors (186290647).

16315513553 is an equidigital number, since it uses as much as digits as its factorization.

16315513553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33091.

The product of its digits is 101250, while the sum is 38.

The spelling of 16315513553 in words is "sixteen billion, three hundred fifteen million, five hundred thirteen thousand, five hundred fifty-three".