16121506573 has 8 divisors (see below), whose sum is σ = 16388701056. Its totient is φ = 15854406000.

The previous prime is 16121506561. The next prime is 16121506649. The reversal of 16121506573 is 37560512161.

16121506573 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 16121506573 - 2²⁵ = 16087952141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16121506553) 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, 379440 + ... + 419782.

It is an arithmetic number, because the mean of its divisors is an integer number (2048587632).

Almost surely, 2^16121506573 is an apocalyptic number.

It is an amenable number.

16121506573 is a deficient number, since it is larger than the sum of its proper divisors (267194483).

16121506573 is an equidigital number, since it uses as much as digits as its factorization.

16121506573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46955.

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 16121506573 in words is "sixteen billion, one hundred twenty-one million, five hundred six thousand, five hundred seventy-three".