72755855727 has 4 divisors (see below), whose sum is σ = 97007807640. Its totient is φ = 48503903816.

The previous prime is 72755855713. The next prime is 72755855729.

It is a happy number.

72755855727 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 72755855727 - 2³⁶ = 4036378991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72755855729) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12125975952 + ... + 12125975957.

It is an arithmetic number, because the mean of its divisors is an integer number (24251951910).

Almost surely, 2^72755855727 is an apocalyptic number.

72755855727 is a deficient number, since it is larger than the sum of its proper divisors (24251951913).

72755855727 is a wasteful number, since it uses less digits than its factorization.

72755855727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24251951912.

The product of its digits is 48020000, while the sum is 60.

The spelling of 72755855727 in words is "seventy-two billion, seven hundred fifty-five million, eight hundred fifty-five thousand, seven hundred twenty-seven".