84057428898 has 24 divisors (see below), whose sum is σ = 185999419008. Its totient is φ = 27422990712.

The previous prime is 84057428891. The next prime is 84057428909. The reversal of 84057428898 is 89882475048.

84057428898 is a `hidden beast` number, since 84 + 0 + 57 + 428 + 89 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (84057428891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49678486 + ... + 49680177.

It is an arithmetic number, because the mean of its divisors is an integer number (7749975792).

Almost surely, 2^84057428898 is an apocalyptic number.

84057428898 is an abundant number, since it is smaller than the sum of its proper divisors (101941990110).

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

84057428898 is a wasteful number, since it uses less digits than its factorization.

84057428898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99358718 (or 99358715 counting only the distinct ones).

The product of its (nonzero) digits is 41287680, while the sum is 63.

The spelling of 84057428898 in words is "eighty-four billion, fifty-seven million, four hundred twenty-eight thousand, eight hundred ninety-eight".