75078325064 has 8 divisors (see below), whose sum is σ = 140771859510. Its totient is φ = 37539162528.

The previous prime is 75078325061. The next prime is 75078325097. The reversal of 75078325064 is 46052387057.

It can be written as a sum of positive squares in only one way, i.e., 63929076964 + 11149248100 = 252842^2 + 105590^2 .

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

It is not an unprimeable number, because it can be changed into a prime (75078325061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4692395309 + ... + 4692395324.

Almost surely, 2^75078325064 is an apocalyptic number.

It is an amenable number.

75078325064 is a deficient number, since it is larger than the sum of its proper divisors (65693534446).

75078325064 is a wasteful number, since it uses less digits than its factorization.

75078325064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9384790639 (or 9384790635 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 75078325064 in words is "seventy-five billion, seventy-eight million, three hundred twenty-five thousand, sixty-four".