86877799720 has 128 divisors (see below), whose sum is σ = 208531065600. Its totient is φ = 32503578624.

The previous prime is 86877799663. The next prime is 86877799727. The reversal of 86877799720 is 2799777868.

It is a self number, because there is not a number n which added to its sum of digits gives 86877799720.

It is not an unprimeable number, because it can be changed into a prime (86877799727) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 10471894 + ... + 10480186.

It is an arithmetic number, because the mean of its divisors is an integer number (1629148950).

Almost surely, 2^86877799720 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 86877799720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104265532800).

86877799720 is an abundant number, since it is smaller than the sum of its proper divisors (121653265880).

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

86877799720 is a wasteful number, since it uses less digits than its factorization.

86877799720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8579 (or 8575 counting only the distinct ones).

The product of its (nonzero) digits is 149361408, while the sum is 70.

The spelling of 86877799720 in words is "eighty-six billion, eight hundred seventy-seven million, seven hundred ninety-nine thousand, seven hundred twenty".