84043621564 has 24 divisors (see below), whose sum is σ = 173883356640. Its totient is φ = 34776670656.

The previous prime is 84043621489. The next prime is 84043621579. The reversal of 84043621564 is 46512634048.

It is a self number, because there is not a number n which added to its sum of digits gives 84043621564.

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 7 ways as a sum of consecutive naturals, for example, 51750187 + ... + 51751810.

It is an arithmetic number, because the mean of its divisors is an integer number (7245139860).

Almost surely, 2^84043621564 is an apocalyptic number.

It is an amenable number.

84043621564 is an abundant number, since it is smaller than the sum of its proper divisors (89839735076).

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

84043621564 is a wasteful number, since it uses less digits than its factorization.

84043621564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103502037 (or 103502035 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 43.

The spelling of 84043621564 in words is "eighty-four billion, forty-three million, six hundred twenty-one thousand, five hundred sixty-four".