84454375021 has 8 divisors (see below), whose sum is σ = 89471689344. Its totient is φ = 79442550720.

The previous prime is 84454374997. The next prime is 84454375039. The reversal of 84454375021 is 12057345448.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84454375021 - 2³⁵ = 50094636653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84454375051) 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, 1340805 + ... + 1402378.

It is an arithmetic number, because the mean of its divisors is an integer number (11183961168).

Almost surely, 2^84454375021 is an apocalyptic number.

It is an amenable number.

84454375021 is a deficient number, since it is larger than the sum of its proper divisors (5017314323).

84454375021 is a wasteful number, since it uses less digits than its factorization.

84454375021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745011.

The product of its (nonzero) digits is 537600, while the sum is 43.

The spelling of 84454375021 in words is "eighty-four billion, four hundred fifty-four million, three hundred seventy-five thousand, twenty-one".