87618840498 has 54 divisors (see below), whose sum is σ = 220857399711. Its totient is φ = 25031442744.

The previous prime is 87618840481. The next prime is 87618840509. The reversal of 87618840498 is 89404881678.

87618840498 is a `hidden beast` number, since 8 + 7 + 61 + 8 + 84 + 0 + 498 = 666.

It can be written as a sum of positive squares in only one way, i.e., 43809420249 + 43809420249 = 209307^2 + 209307^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=209307.

It is a super-2 number, since 2×87618840498² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8785911 + ... + 8795877.

Almost surely, 2^87618840498 is an apocalyptic number.

87618840498 is an abundant number, since it is smaller than the sum of its proper divisors (133238559213).

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

87618840498 is an frugal number, since it uses more digits than its factorization.

87618840498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19956 (or 9979 counting only the distinct ones).

The product of its (nonzero) digits is 24772608, while the sum is 63.

The spelling of 87618840498 in words is "eighty-seven billion, six hundred eighteen million, eight hundred forty thousand, four hundred ninety-eight".