52381755681 has 16 divisors (see below), whose sum is σ = 70827157056. Its totient is φ = 34429142016.

The previous prime is 52381755667. The next prime is 52381755703. The reversal of 52381755681 is 18655718325.

It is not a de Polignac number, because 52381755681 - 2⁹ = 52381755169 is a prime.

It is a super-2 number, since 2×52381755681² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52381755611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 521746 + ... + 613988.

It is an arithmetic number, because the mean of its divisors is an integer number (4426697316).

Almost surely, 2^52381755681 is an apocalyptic number.

It is an amenable number.

52381755681 is a deficient number, since it is larger than the sum of its proper divisors (18445401375).

52381755681 is a wasteful number, since it uses less digits than its factorization.

52381755681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94912.

The product of its digits is 2016000, while the sum is 51.

The spelling of 52381755681 in words is "fifty-two billion, three hundred eighty-one million, seven hundred fifty-five thousand, six hundred eighty-one".