16885051871 has 4 divisors (see below), whose sum is σ = 16885729632. Its totient is φ = 16884374112.

The previous prime is 16885051819. The next prime is 16885051889. The reversal of 16885051871 is 17815058861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16885051871 is a prime.

It is a super-3 number, since 3×16885051871³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16885351871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300026 + ... + 351831.

It is an arithmetic number, because the mean of its divisors is an integer number (4221432408).

Almost surely, 2^16885051871 is an apocalyptic number.

16885051871 is a deficient number, since it is larger than the sum of its proper divisors (677761).

16885051871 is an equidigital number, since it uses as much as digits as its factorization.

16885051871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677760.

The product of its (nonzero) digits is 537600, while the sum is 50.

The spelling of 16885051871 in words is "sixteen billion, eight hundred eighty-five million, fifty-one thousand, eight hundred seventy-one".