84171701998 has 8 divisors (see below), whose sum is σ = 126261721008. Its totient is φ = 42084461664.

The previous prime is 84171701993. The next prime is 84171702053. The reversal of 84171701998 is 89910717148.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84171701993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 617211 + ... + 741142.

It is an arithmetic number, because the mean of its divisors is an integer number (15782715126).

Almost surely, 2^84171701998 is an apocalyptic number.

84171701998 is a deficient number, since it is larger than the sum of its proper divisors (42090019010).

84171701998 is a wasteful number, since it uses less digits than its factorization.

84171701998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389338.

The product of its (nonzero) digits is 1016064, while the sum is 55.

The spelling of 84171701998 in words is "eighty-four billion, one hundred seventy-one million, seven hundred one thousand, nine hundred ninety-eight".