16994936865942 has 112 divisors (see below), whose sum is σ = 43684076570112. Its totient is φ = 4855385818800.

The previous prime is 16994936865923. The next prime is 16994936865971. The reversal of 16994936865942 is 24956863949961.

16994936865942 is a `hidden beast` number, since 1 + 6 + 9 + 9 + 493 + 6 + 86 + 5 + 9 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 194390803 + ... + 194478209.

Almost surely, 2^{16994936865942} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16994936865942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21842038285056).

16994936865942 is an abundant number, since it is smaller than the sum of its proper divisors (26689139704170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16994936865942 is an equidigital number, since it uses as much as digits as its factorization.

16994936865942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106485 (or 106470 counting only the distinct ones).

The product of its digits is 5441955840, while the sum is 81.

The spelling of 16994936865942 in words is "sixteen trillion, nine hundred ninety-four billion, nine hundred thirty-six million, eight hundred sixty-five thousand, nine hundred forty-two".