42866288181 has 32 divisors (see below), whose sum is σ = 63711878400. Its totient is φ = 28484879040.

The previous prime is 42866288167. The next prime is 42866288183. The reversal of 42866288181 is 18188266824.

42866288181 is a `hidden beast` number, since 4 + 2 + 8 + 6 + 628 + 8 + 1 + 8 + 1 = 666.

It is not a de Polignac number, because 42866288181 - 2⁷ = 42866288053 is a prime.

It is a super-3 number, since 3×42866288181³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42866288183) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12383791 + ... + 12387251.

It is an arithmetic number, because the mean of its divisors is an integer number (1990996200).

Almost surely, 2^42866288181 is an apocalyptic number.

It is an amenable number.

42866288181 is a deficient number, since it is larger than the sum of its proper divisors (20845590219).

42866288181 is a wasteful number, since it uses less digits than its factorization.

42866288181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4826 (or 4820 counting only the distinct ones).

The product of its digits is 2359296, while the sum is 54.

The spelling of 42866288181 in words is "forty-two billion, eight hundred sixty-six million, two hundred eighty-eight thousand, one hundred eighty-one".