75805307505 has 24 divisors (see below), whose sum is σ = 137108731968. Its totient is φ = 38671692576.

The previous prime is 75805307483. The next prime is 75805307519. The reversal of 75805307505 is 50570350857.

It is not a de Polignac number, because 75805307505 - 2¹⁰ = 75805306481 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36619887 + ... + 36621956.

It is an arithmetic number, because the mean of its divisors is an integer number (5712863832).

Almost surely, 2^75805307505 is an apocalyptic number.

It is an amenable number.

75805307505 is a deficient number, since it is larger than the sum of its proper divisors (61303424463).

75805307505 is a wasteful number, since it uses less digits than its factorization.

75805307505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73241877 (or 73241874 counting only the distinct ones).

The product of its (nonzero) digits is 735000, while the sum is 45.

The spelling of 75805307505 in words is "seventy-five billion, eight hundred five million, three hundred seven thousand, five hundred five".