87043977216 has 416 divisors, whose sum is σ = 296605939200. Its totient is φ = 24710676480.

The previous prime is 87043977203. The next prime is 87043977217. The reversal of 87043977216 is 61277934078.

It is a super-2 number, since 2×87043977216² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (87043977217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177278731 + ... + 177279221.

Almost surely, 2^87043977216 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 87043977216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148302969600).

87043977216 is an abundant number, since it is smaller than the sum of its proper divisors (209561961984).

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

87043977216 is a wasteful number, since it uses less digits than its factorization.

87043977216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760 (or 732 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The spelling of 87043977216 in words is "eighty-seven billion, forty-three million, nine hundred seventy-seven thousand, two hundred sixteen".