16885808398 has 4 divisors (see below), whose sum is σ = 25328712600. Its totient is φ = 8442904198.

The previous prime is 16885808389. The next prime is 16885808449. The reversal of 16885808398 is 89380858861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89380858861 = 7 ⋅12768694123.

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, 4221452098 + ... + 4221452101.

It is an arithmetic number, because the mean of its divisors is an integer number (6332178150).

Almost surely, 2^16885808398 is an apocalyptic number.

16885808398 is a deficient number, since it is larger than the sum of its proper divisors (8442904202).

16885808398 is an equidigital number, since it uses as much as digits as its factorization.

16885808398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8442904201.

The product of its (nonzero) digits is 26542080, while the sum is 64.

The spelling of 16885808398 in words is "sixteen billion, eight hundred eighty-five million, eight hundred eight thousand, three hundred ninety-eight".