16506145653 has 8 divisors (see below), whose sum is σ = 22012810848. Its totient is φ = 11001788784.

The previous prime is 16506145637. The next prime is 16506145681. The reversal of 16506145653 is 35654160561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16506145653 - 2⁴ = 16506145637 is a prime.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 560326 + ... + 589047.

It is an arithmetic number, because the mean of its divisors is an integer number (2751601356).

Almost surely, 2^16506145653 is an apocalyptic number.

It is an amenable number.

16506145653 is a deficient number, since it is larger than the sum of its proper divisors (5506665195).

16506145653 is a wasteful number, since it uses less digits than its factorization.

16506145653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154163.

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 16506145653 in words is "sixteen billion, five hundred six million, one hundred forty-five thousand, six hundred fifty-three".