16893781398605 has 8 divisors (see below), whose sum is σ = 20282538942432. Its totient is φ = 13508357609488.

The previous prime is 16893781398551. The next prime is 16893781398647. The reversal of 16893781398605 is 50689318739861.

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 16893781398605 - 2⁸ = 16893781398349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 833427527 + ... + 833447796.

It is an arithmetic number, because the mean of its divisors is an integer number (2535317367804).

Almost surely, 2^{16893781398605} is an apocalyptic number.

It is an amenable number.

16893781398605 is a deficient number, since it is larger than the sum of its proper divisors (3388757543827).

16893781398605 is a wasteful number, since it uses less digits than its factorization.

16893781398605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666877355.

The product of its (nonzero) digits is 470292480, while the sum is 74.

The spelling of 16893781398605 in words is "sixteen trillion, eight hundred ninety-three billion, seven hundred eighty-one million, three hundred ninety-eight thousand, six hundred five".