84430878870 has 32 divisors (see below), whose sum is σ = 218221349472. Its totient is φ = 20782985472.

The previous prime is 84430878859. The next prime is 84430878887. The reversal of 84430878870 is 7887803448.

It is a super-2 number, since 2×84430878870² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 84430878870.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108244327 + ... + 108245106.

It is an arithmetic number, because the mean of its divisors is an integer number (6819417171).

Almost surely, 2^84430878870 is an apocalyptic number.

84430878870 is an abundant number, since it is smaller than the sum of its proper divisors (133790470602).

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

84430878870 is a wasteful number, since it uses less digits than its factorization.

84430878870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216489456.

The product of its (nonzero) digits is 9633792, while the sum is 57.

The spelling of 84430878870 in words is "eighty-four billion, four hundred thirty million, eight hundred seventy-eight thousand, eight hundred seventy".