128373056394 has 16 divisors (see below), whose sum is σ = 280086668640. Its totient is φ = 38900926160.

The previous prime is 128373056381. The next prime is 128373056423. The reversal of 128373056394 is 493650373821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 972523089 + ... + 972523220.

It is an arithmetic number, because the mean of its divisors is an integer number (17505416790).

It is a 1-persistent number, because it is pandigital, but 2⋅128373056394 = 256746112788 is not.

Almost surely, 2^128373056394 is an apocalyptic number.

128373056394 is an abundant number, since it is smaller than the sum of its proper divisors (151713612246).

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

128373056394 is a wasteful number, since it uses less digits than its factorization.

128373056394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945046325.

The product of its (nonzero) digits is 3265920, while the sum is 51.

The spelling of 128373056394 in words is "one hundred twenty-eight billion, three hundred seventy-three million, fifty-six thousand, three hundred ninety-four".