84181975212 has 24 divisors (see below), whose sum is σ = 196429944816. Its totient is φ = 28059896128.

The previous prime is 84181975211. The next prime is 84181975231. The reversal of 84181975212 is 21257918148.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (84181975211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527878 + ... + 668594.

It is an arithmetic number, because the mean of its divisors is an integer number (8184581034).

Almost surely, 2^84181975212 is an apocalyptic number.

It is an amenable number.

84181975212 is an abundant number, since it is smaller than the sum of its proper divisors (112247969604).

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

84181975212 is a wasteful number, since it uses less digits than its factorization.

84181975212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190577 (or 190575 counting only the distinct ones).

The product of its digits is 322560, while the sum is 48.

The spelling of 84181975212 in words is "eighty-four billion, one hundred eighty-one million, nine hundred seventy-five thousand, two hundred twelve".