16506145604 has 48 divisors (see below), whose sum is σ = 31585873536. Its totient is φ = 7501401600.

The previous prime is 16506145603. The next prime is 16506145609. The reversal of 16506145604 is 40654160561.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (16506145603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3493964 + ... + 3498684.

It is an arithmetic number, because the mean of its divisors is an integer number (658039032).

Almost surely, 2^16506145604 is an apocalyptic number.

It is an amenable number.

16506145604 is a deficient number, since it is larger than the sum of its proper divisors (15079727932).

16506145604 is a wasteful number, since it uses less digits than its factorization.

16506145604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5756 (or 5754 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 16506145604 in words is "sixteen billion, five hundred six million, one hundred forty-five thousand, six hundred four".