16855801934 has 4 divisors (see below), whose sum is σ = 25283702904. Its totient is φ = 8427900966.

The previous prime is 16855801927. The next prime is 16855801997. The reversal of 16855801934 is 43910855861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43910855861 = 3271 ⋅13424291.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4213950482 + ... + 4213950485.

It is an arithmetic number, because the mean of its divisors is an integer number (6320925726).

Almost surely, 2^16855801934 is an apocalyptic number.

16855801934 is a deficient number, since it is larger than the sum of its proper divisors (8427900970).

16855801934 is an equidigital number, since it uses as much as digits as its factorization.

16855801934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8427900969.

The product of its (nonzero) digits is 1036800, while the sum is 50.

The spelling of 16855801934 in words is "sixteen billion, eight hundred fifty-five million, eight hundred one thousand, nine hundred thirty-four".