16393696578 has 192 divisors, whose sum is σ = 43636320000. Its totient is φ = 4348753920.

The previous prime is 16393696531. The next prime is 16393696663. The reversal of 16393696578 is 87569639361.

16393696578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10935673 + ... + 10937171.

It is an arithmetic number, because the mean of its divisors is an integer number (227272500).

Almost surely, 2^16393696578 is an apocalyptic number.

16393696578 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16393696578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21818160000).

16393696578 is an abundant number, since it is smaller than the sum of its proper divisors (27242623422).

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

16393696578 is a wasteful number, since it uses less digits than its factorization.

16393696578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657 (or 1654 counting only the distinct ones).

The product of its digits is 44089920, while the sum is 63.

The spelling of 16393696578 in words is "sixteen billion, three hundred ninety-three million, six hundred ninety-six thousand, five hundred seventy-eight".