16782945251 has 8 divisors (see below), whose sum is σ = 16806579504. Its totient is φ = 16759330560.

The previous prime is 16782945247. The next prime is 16782945287. The reversal of 16782945251 is 15254928761.

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

It is a cyclic number.

It is not a de Polignac number, because 16782945251 - 2² = 16782945247 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 16782945251.

It is not an unprimeable number, because it can be changed into a prime (16782045251) 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, 2548475 + ... + 2555051.

It is an arithmetic number, because the mean of its divisors is an integer number (2100822438).

Almost surely, 2^16782945251 is an apocalyptic number.

16782945251 is a deficient number, since it is larger than the sum of its proper divisors (23634253).

16782945251 is a wasteful number, since it uses less digits than its factorization.

16782945251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9781.

The product of its digits is 1209600, while the sum is 50.

The spelling of 16782945251 in words is "sixteen billion, seven hundred eighty-two million, nine hundred forty-five thousand, two hundred fifty-one".