87235537236 has 12 divisors (see below), whose sum is σ = 203549586912. Its totient is φ = 29078512408.

The previous prime is 87235537229. The next prime is 87235537289. The reversal of 87235537236 is 63273553278.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×87235537236² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3634814040 + ... + 3634814063.

It is an arithmetic number, because the mean of its divisors is an integer number (16962465576).

Almost surely, 2^87235537236 is an apocalyptic number.

It is an amenable number.

87235537236 is an abundant number, since it is smaller than the sum of its proper divisors (116314049676).

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

87235537236 is a wasteful number, since it uses less digits than its factorization.

87235537236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7269628110 (or 7269628108 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 51.

The spelling of 87235537236 in words is "eighty-seven billion, two hundred thirty-five million, five hundred thirty-seven thousand, two hundred thirty-six".