75709866055 has 4 divisors (see below), whose sum is σ = 90851839272. Its totient is φ = 60567892840.

The previous prime is 75709866017. The next prime is 75709866083. The reversal of 75709866055 is 55066890757.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 75709866055 - 2¹¹ = 75709864007 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 3 ways as a sum of consecutive naturals, for example, 7570986601 + ... + 7570986610.

It is an arithmetic number, because the mean of its divisors is an integer number (22712959818).

Almost surely, 2^75709866055 is an apocalyptic number.

75709866055 is a deficient number, since it is larger than the sum of its proper divisors (15141973217).

75709866055 is a wasteful number, since it uses less digits than its factorization.

75709866055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15141973216.

The product of its (nonzero) digits is 15876000, while the sum is 58.

The spelling of 75709866055 in words is "seventy-five billion, seven hundred nine million, eight hundred sixty-six thousand, fifty-five".