42789186081 has 12 divisors (see below), whose sum is σ = 61811828052. Its totient is φ = 28523712096.

The previous prime is 42789186079. The next prime is 42789186091. The reversal of 42789186081 is 18068198724.

42789186081 is a `hidden beast` number, since 4 + 27 + 8 + 9 + 1 + 8 + 608 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 23383303056 + 19405883025 = 152916^2 + 139305^2 .

It is not a de Polignac number, because 42789186081 - 2¹ = 42789186079 is a prime.

It is a super-2 number, since 2×42789186081² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42789186071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85126 + ... + 304671.

It is an arithmetic number, because the mean of its divisors is an integer number (5150985671).

Almost surely, 2^42789186081 is an apocalyptic number.

It is an amenable number.

42789186081 is a deficient number, since it is larger than the sum of its proper divisors (19022641971).

42789186081 is a wasteful number, since it uses less digits than its factorization.

42789186081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402000 (or 401997 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The spelling of 42789186081 in words is "forty-two billion, seven hundred eighty-nine million, one hundred eighty-six thousand, eighty-one".