87189211200 has 1344 divisors, whose sum is σ = 373864071168. Its totient is φ = 17296588800.

The previous prime is 87189211199. The next prime is 87189211211. The reversal of 87189211200 is 211298178.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (39).

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 191 ways as a sum of consecutive naturals, for example, 636417532 + ... + 636417668.

It is an arithmetic number, because the mean of its divisors is an integer number (278172672).

Almost surely, 2^87189211200 is an apocalyptic number.

87189211200 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87189211200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186932035584).

87189211200 is an abundant number, since it is smaller than the sum of its proper divisors (286674859968).

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

87189211200 is a wasteful number, since it uses less digits than its factorization.

87189211200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 39.

The spelling of 87189211200 in words is "eighty-seven billion, one hundred eighty-nine million, two hundred eleven thousand, two hundred".