42531813108 has 36 divisors (see below), whose sum is σ = 107518975200. Its totient is φ = 14176215696.

The previous prime is 42531813097. The next prime is 42531813109. The reversal of 42531813108 is 80131813524.

42531813108 is a `hidden beast` number, since 4 + 2 + 531 + 8 + 13 + 108 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42531813109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 559993 + ... + 631391.

It is an arithmetic number, because the mean of its divisors is an integer number (2986638200).

Almost surely, 2^42531813108 is an apocalyptic number.

It is an amenable number.

42531813108 is an abundant number, since it is smaller than the sum of its proper divisors (64987162092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42531813108 is a wasteful number, since it uses less digits than its factorization.

42531813108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87956 (or 87951 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 42531813108 in words is "forty-two billion, five hundred thirty-one million, eight hundred thirteen thousand, one hundred eight".