87851588238 has 24 divisors (see below), whose sum is σ = 200363272200. Its totient is φ = 27742606704.

The previous prime is 87851588221. The next prime is 87851588249. The reversal of 87851588238 is 83288515878.

87851588238 is a `hidden beast` number, since 8 + 7 + 8 + 515 + 8 + 82 + 38 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 128437653 + ... + 128438336.

It is an arithmetic number, because the mean of its divisors is an integer number (8348469675).

Almost surely, 2^87851588238 is an apocalyptic number.

87851588238 is an abundant number, since it is smaller than the sum of its proper divisors (112511683962).

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

87851588238 is a wasteful number, since it uses less digits than its factorization.

87851588238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256876016 (or 256876013 counting only the distinct ones).

The product of its digits is 34406400, while the sum is 63.

The spelling of 87851588238 in words is "eighty-seven billion, eight hundred fifty-one million, five hundred eighty-eight thousand, two hundred thirty-eight".