75998328644 has 12 divisors (see below), whose sum is σ = 151996657344. Its totient is φ = 32570712264.

The previous prime is 75998328643. The next prime is 75998328713. The reversal of 75998328644 is 44682389957.

75998328644 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (75998328641) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1357112984 + ... + 1357113039.

It is an arithmetic number, because the mean of its divisors is an integer number (12666388112).

Almost surely, 2^75998328644 is an apocalyptic number.

It is an amenable number.

75998328644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

75998328644 is a wasteful number, since it uses less digits than its factorization.

75998328644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2714226034 (or 2714226032 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 65.

The spelling of 75998328644 in words is "seventy-five billion, nine hundred ninety-eight million, three hundred twenty-eight thousand, six hundred forty-four".