16387545523 has 8 divisors (see below), whose sum is σ = 16507962000. Its totient is φ = 16267268448.

The previous prime is 16387545511. The next prime is 16387545527. The reversal of 16387545523 is 32554578361.

It is a happy number.

16387545523 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 a de Polignac number, because none of the positive numbers 2^k-16387545523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16387545527) 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, 207265 + ... + 275197.

It is an arithmetic number, because the mean of its divisors is an integer number (2063495250).

Almost surely, 2^16387545523 is an apocalyptic number.

16387545523 is a deficient number, since it is larger than the sum of its proper divisors (120416477).

16387545523 is a wasteful number, since it uses less digits than its factorization.

16387545523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69701.

The product of its digits is 3024000, while the sum is 49.

The spelling of 16387545523 in words is "sixteen billion, three hundred eighty-seven million, five hundred forty-five thousand, five hundred twenty-three".