86213878884 has 81 divisors (see below), whose sum is σ = 253546125651. Its totient is φ = 24629013360.

The previous prime is 86213878873. The next prime is 86213878957. The reversal of 86213878884 is 48887831268.

The square root of 86213878884 is 293622.

It is a perfect power (a square), and thus also a powerful number.

86213878884 is a `hidden beast` number, since 86 + 21 + 387 + 88 + 84 = 666.

It is a super-3 number, since 3×86213878884³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 12328629 + ... + 12335619.

Almost surely, 2^86213878884 is an apocalyptic number.

86213878884 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

86213878884 is the 293622-nd square number.

It is an amenable number.

86213878884 is an abundant number, since it is smaller than the sum of its proper divisors (167332246767).

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

86213878884 is an equidigital number, since it uses as much as digits as its factorization.

86213878884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14006 (or 7003 counting only the distinct ones).

The product of its digits is 33030144, while the sum is 63.

The spelling of 86213878884 in words is "eighty-six billion, two hundred thirteen million, eight hundred seventy-eight thousand, eight hundred eighty-four".