84438472868 has 24 divisors (see below), whose sum is σ = 151465959960. Its totient is φ = 41163770880.

The previous prime is 84438472837. The next prime is 84438472903. The reversal of 84438472868 is 86827483448.

It can be written as a sum of positive squares in 4 ways, for example, as 16250640484 + 68187832384 = 127478^2 + 261128^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 84438472868.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103880 + ... + 423872.

It is an arithmetic number, because the mean of its divisors is an integer number (6311081665).

Almost surely, 2^84438472868 is an apocalyptic number.

It is an amenable number.

84438472868 is a deficient number, since it is larger than the sum of its proper divisors (67027487092).

84438472868 is a wasteful number, since it uses less digits than its factorization.

84438472868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321647 (or 321645 counting only the distinct ones).

The product of its digits is 66060288, while the sum is 62.

The spelling of 84438472868 in words is "eighty-four billion, four hundred thirty-eight million, four hundred seventy-two thousand, eight hundred sixty-eight".