52727997891 has 8 divisors (see below), whose sum is σ = 70557803344. Its totient is φ = 35025095520.

The previous prime is 52727997857. The next prime is 52727997911. The reversal of 52727997891 is 19879972725.

52727997891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52727997891 - 2⁹ = 52727997379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52727993891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31724800 + ... + 31726461.

It is an arithmetic number, because the mean of its divisors is an integer number (8819725418).

Almost surely, 2^52727997891 is an apocalyptic number.

52727997891 is a deficient number, since it is larger than the sum of its proper divisors (17829805453).

52727997891 is a wasteful number, since it uses less digits than its factorization.

52727997891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63451541.

The product of its digits is 40007520, while the sum is 66.

The spelling of 52727997891 in words is "fifty-two billion, seven hundred twenty-seven million, nine hundred ninety-seven thousand, eight hundred ninety-one".