84178406402 has 8 divisors (see below), whose sum is σ = 126298336512. Its totient is φ = 42078960900.

The previous prime is 84178406359. The next prime is 84178406423. The reversal of 84178406402 is 20460487148.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5110874 + ... + 5127317.

It is an arithmetic number, because the mean of its divisors is an integer number (15787292064).

Almost surely, 2^84178406402 is an apocalyptic number.

84178406402 is a deficient number, since it is larger than the sum of its proper divisors (42119930110).

84178406402 is a wasteful number, since it uses less digits than its factorization.

84178406402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10242304.

The product of its (nonzero) digits is 344064, while the sum is 44.

The spelling of 84178406402 in words is "eighty-four billion, one hundred seventy-eight million, four hundred six thousand, four hundred two".