87800550544 has 80 divisors (see below), whose sum is σ = 200768864256. Its totient is φ = 36400118400.

The previous prime is 87800550529. The next prime is 87800550559. The reversal of 87800550544 is 44505500878.

It is an interprime number because it is at equal distance from previous prime (87800550529) and next prime (87800550559).

It is a junction number, because it is equal to n+sod(n) for n = 87800550494 and 87800550503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13909149 + ... + 13915459.

Almost surely, 2^87800550544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87800550544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100384432128).

87800550544 is an abundant number, since it is smaller than the sum of its proper divisors (112968313712).

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

87800550544 is a wasteful number, since it uses less digits than its factorization.

87800550544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10364 (or 10358 counting only the distinct ones).

The product of its (nonzero) digits is 896000, while the sum is 46.

The spelling of 87800550544 in words is "eighty-seven billion, eight hundred million, five hundred fifty thousand, five hundred forty-four".