133394060728 has 8 divisors (see below), whose sum is σ = 250113863880. Its totient is φ = 66697030360.

The previous prime is 133394060707. The next prime is 133394060731. The reversal of 133394060728 is 827060493331.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 8337128788 + ... + 8337128803.

It is an arithmetic number, because the mean of its divisors is an integer number (31264232985).

Almost surely, 2^133394060728 is an apocalyptic number.

It is an amenable number.

133394060728 is a deficient number, since it is larger than the sum of its proper divisors (116719803152).

133394060728 is a wasteful number, since it uses less digits than its factorization.

133394060728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16674257597 (or 16674257593 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 133394060728 in words is "one hundred thirty-three billion, three hundred ninety-four million, sixty thousand, seven hundred twenty-eight".