16572702509 has 16 divisors (see below), whose sum is σ = 18932586624. Its totient is φ = 14359699200.

The previous prime is 16572702493. The next prime is 16572702511. The reversal of 16572702509 is 90520727561.

It is not a de Polignac number, because 16572702509 - 2⁴ = 16572702493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16572702509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16572702599) 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, 45464 + ... + 187649.

It is an arithmetic number, because the mean of its divisors is an integer number (1183286664).

Almost surely, 2^16572702509 is an apocalyptic number.

It is an amenable number.

16572702509 is a deficient number, since it is larger than the sum of its proper divisors (2359884115).

16572702509 is a wasteful number, since it uses less digits than its factorization.

16572702509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233428.

The product of its (nonzero) digits is 264600, while the sum is 44.

The spelling of 16572702509 in words is "sixteen billion, five hundred seventy-two million, seven hundred two thousand, five hundred nine".