16984400937381 has 24 divisors (see below), whose sum is σ = 24884283715200. Its totient is φ = 11160887287200.

The previous prime is 16984400937313. The next prime is 16984400937403. The reversal of 16984400937381 is 18373900448961.

16984400937381 is a `hidden beast` number, since 1 + 6 + 9 + 84 + 400 + 9 + 3 + 73 + 81 = 666.

It is not a de Polignac number, because 16984400937381 - 2²⁹ = 16983864066469 is a prime.

It is a super-2 number, since 2×16984400937381² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16984400937781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 276825 + ... + 5834846.

It is an arithmetic number, because the mean of its divisors is an integer number (1036845154800).

Almost surely, 2^{16984400937381} is an apocalyptic number.

It is an amenable number.

16984400937381 is a deficient number, since it is larger than the sum of its proper divisors (7899882777819).

16984400937381 is a wasteful number, since it uses less digits than its factorization.

16984400937381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6116097 (or 6116094 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The spelling of 16984400937381 in words is "sixteen trillion, nine hundred eighty-four billion, four hundred million, nine hundred thirty-seven thousand, three hundred eighty-one".