16575007509 has 16 divisors (see below), whose sum is σ = 24793974400. Its totient is φ = 10942721568.

The previous prime is 16575007499. The next prime is 16575007613. The reversal of 16575007509 is 90570057561.

It is a happy number.

16575007509 is a `hidden beast` number, since 1 + 6 + 575 + 0 + 0 + 75 + 0 + 9 = 666.

It is not a de Polignac number, because 16575007509 - 2¹² = 16575003413 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 (16575000509) 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, 2977264 + ... + 2982825.

It is an arithmetic number, because the mean of its divisors is an integer number (1549623400).

Almost surely, 2^16575007509 is an apocalyptic number.

It is an amenable number.

16575007509 is a deficient number, since it is larger than the sum of its proper divisors (8218966891).

16575007509 is a wasteful number, since it uses less digits than its factorization.

16575007509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5960201 (or 5960195 counting only the distinct ones).

The product of its (nonzero) digits is 330750, while the sum is 45.

The spelling of 16575007509 in words is "sixteen billion, five hundred seventy-five million, seven thousand, five hundred nine".