16285772891 has 8 divisors (see below), whose sum is σ = 16565947200. Its totient is φ = 16005736840.

The previous prime is 16285772869. The next prime is 16285772927. The reversal of 16285772891 is 19827758261.

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 16285772891 - 2⁶ = 16285772827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16285772831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218876 + ... + 283686.

It is an arithmetic number, because the mean of its divisors is an integer number (2070743400).

Almost surely, 2^16285772891 is an apocalyptic number.

16285772891 is a deficient number, since it is larger than the sum of its proper divisors (280174309).

16285772891 is an equidigital number, since it uses as much as digits as its factorization.

16285772891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69129.

The product of its digits is 3386880, while the sum is 56.

The spelling of 16285772891 in words is "sixteen billion, two hundred eighty-five million, seven hundred seventy-two thousand, eight hundred ninety-one".