87299971800 has 96 divisors (see below), whose sum is σ = 270897393600. Its totient is φ = 23256983680.

The previous prime is 87299971777. The next prime is 87299971807. The reversal of 87299971800 is 817999278.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87299971807) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 540007 + ... + 682793.

It is an arithmetic number, because the mean of its divisors is an integer number (2821847850).

Almost surely, 2^87299971800 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 87299971800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135448696800).

87299971800 is an abundant number, since it is smaller than the sum of its proper divisors (183597421800).

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

87299971800 is a wasteful number, since it uses less digits than its factorization.

87299971800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143825 (or 143816 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 60.

The spelling of 87299971800 in words is "eighty-seven billion, two hundred ninety-nine million, nine hundred seventy-one thousand, eight hundred".