84673591128 has 144 divisors (see below), whose sum is σ = 267140044080. Its totient is φ = 24158445696.

The previous prime is 84673591127. The next prime is 84673591147. The reversal of 84673591128 is 82119537648.

84673591128 is a `hidden beast` number, since 8 + 46 + 7 + 3 + 591 + 1 + 2 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84673591127) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2548350 + ... + 2581362.

It is an arithmetic number, because the mean of its divisors is an integer number (1855139195).

Almost surely, 2^84673591128 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 84673591128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133570022040).

84673591128 is an abundant number, since it is smaller than the sum of its proper divisors (182466452952).

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

84673591128 is a wasteful number, since it uses less digits than its factorization.

84673591128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33766 (or 33752 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 84673591128 in words is "eighty-four billion, six hundred seventy-three million, five hundred ninety-one thousand, one hundred twenty-eight".