16394107678998 has 96 divisors (see below), whose sum is σ = 38360142238464. Its totient is φ = 4657221551808.

The previous prime is 16394107678969. The next prime is 16394107678999. The reversal of 16394107678998 is 89987670149361.

It is a super-2 number, since 2×16394107678998² (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 (16394107678999) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50358415 + ... + 50682917.

It is an arithmetic number, because the mean of its divisors is an integer number (399584814984).

Almost surely, 2^{16394107678998} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16394107678998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19180071119232).

16394107678998 is an abundant number, since it is smaller than the sum of its proper divisors (21966034559466).

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

16394107678998 is a wasteful number, since it uses less digits than its factorization.

16394107678998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325506 (or 325499 counting only the distinct ones).

The product of its (nonzero) digits is 987614208, while the sum is 78.

The spelling of 16394107678998 in words is "sixteen trillion, three hundred ninety-four billion, one hundred seven million, six hundred seventy-eight thousand, nine hundred ninety-eight".