84401391960858 has 16 divisors (see below), whose sum is σ = 192917467339200. Its totient is φ = 24114683417376.

The previous prime is 84401391960857. The next prime is 84401391960877. The reversal of 84401391960858 is 85806919310448.

It is not an unprimeable number, because it can be changed into a prime (84401391960857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1004778475683 + ... + 1004778475766.

It is an arithmetic number, because the mean of its divisors is an integer number (12057341708700).

Almost surely, 2^{84401391960858} is an apocalyptic number.

84401391960858 is an abundant number, since it is smaller than the sum of its proper divisors (108516075378342).

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

84401391960858 is a wasteful number, since it uses less digits than its factorization.

84401391960858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009556951461.

The product of its (nonzero) digits is 59719680, while the sum is 66.

The spelling of 84401391960858 in words is "eighty-four trillion, four hundred one billion, three hundred ninety-one million, nine hundred sixty thousand, eight hundred fifty-eight".