87813124506 has 12 divisors (see below), whose sum is σ = 190261769802. Its totient is φ = 29271041496.

The previous prime is 87813124499. The next prime is 87813124517. The reversal of 87813124506 is 60542131878.

87813124506 is a `hidden beast` number, since 8 + 7 + 8 + 13 + 124 + 506 = 666.

It can be written as a sum of positive squares in only one way, i.e., 61620615225 + 26192509281 = 248235^2 + 161841^2 .

It is a super-2 number, since 2×87813124506² (a number of 23 digits) contains 22 as substring.

It is a Curzon 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 5 ways as a sum of consecutive naturals, for example, 2439253441 + ... + 2439253476.

Almost surely, 2^87813124506 is an apocalyptic number.

87813124506 is an abundant number, since it is smaller than the sum of its proper divisors (102448645296).

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

87813124506 is a wasteful number, since it uses less digits than its factorization.

87813124506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878506925 (or 4878506922 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 87813124506 in words is "eighty-seven billion, eight hundred thirteen million, one hundred twenty-four thousand, five hundred six".