75069444985 has 12 divisors (see below), whose sum is σ = 95694062508. Its totient is φ = 56522875136.

The previous prime is 75069444949. The next prime is 75069445013. The reversal of 75069444985 is 58944496057.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 22364305209 + 52705139776 = 149547^2 + 229576^2 .

It is not a de Polignac number, because 75069444985 - 2¹¹ = 75069442937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25974142 + ... + 25977031.

It is an arithmetic number, because the mean of its divisors is an integer number (7974505209).

Almost surely, 2^75069444985 is an apocalyptic number.

It is an amenable number.

75069444985 is a deficient number, since it is larger than the sum of its proper divisors (20624617523).

75069444985 is a wasteful number, since it uses less digits than its factorization.

75069444985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51951212 (or 51951195 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 61.

The spelling of 75069444985 in words is "seventy-five billion, sixty-nine million, four hundred forty-four thousand, nine hundred eighty-five".