75321217855 has 32 divisors (see below), whose sum is σ = 100531888128. Its totient is φ = 53798774400.

The previous prime is 75321217771. The next prime is 75321217889. The reversal of 75321217855 is 55871212357.

It is not a de Polignac number, because 75321217855 - 2¹⁵ = 75321185087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4196350 + ... + 4214260.

It is an arithmetic number, because the mean of its divisors is an integer number (3141621504).

Almost surely, 2^75321217855 is an apocalyptic number.

75321217855 is a deficient number, since it is larger than the sum of its proper divisors (25210670273).

75321217855 is a wasteful number, since it uses less digits than its factorization.

75321217855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20047.

The product of its digits is 588000, while the sum is 46.

The spelling of 75321217855 in words is "seventy-five billion, three hundred twenty-one million, two hundred seventeen thousand, eight hundred fifty-five".