16500133066545 has 24 divisors (see below), whose sum is σ = 28658479629312. Its totient is φ = 8782148205600.

The previous prime is 16500133066531. The next prime is 16500133066583. The reversal of 16500133066545 is 54566033100561.

It is a happy number.

16500133066545 is a `hidden beast` number, since 1 + 6 + 5 + 0 + 0 + 13 + 30 + 66 + 545 = 666.

It is not a de Polignac number, because 16500133066545 - 2⁵ = 16500133066513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 16500133066545.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 373368561 + ... + 373412750.

It is an arithmetic number, because the mean of its divisors is an integer number (1194103317888).

Almost surely, 2^{16500133066545} is an apocalyptic number.

16500133066545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16500133066545 is a deficient number, since it is larger than the sum of its proper divisors (12158346562767).

16500133066545 is a wasteful number, since it uses less digits than its factorization.

16500133066545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746781813 (or 746781810 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

The spelling of 16500133066545 in words is "sixteen trillion, five hundred billion, one hundred thirty-three million, sixty-six thousand, five hundred forty-five".