396436196778 has 32 divisors (see below), whose sum is σ = 820517688000. Its totient is φ = 127541237376.

The previous prime is 396436196719. The next prime is 396436196789. The reversal of 396436196778 is 877691634693.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47550 + ... + 891702.

It is an arithmetic number, because the mean of its divisors is an integer number (25641177750).

Almost surely, 2^396436196778 is an apocalyptic number.

396436196778 is an abundant number, since it is smaller than the sum of its proper divisors (424081491222).

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

396436196778 is a wasteful number, since it uses less digits than its factorization.

396436196778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846886.

The product of its digits is 246903552, while the sum is 69.

The spelling of 396436196778 in words is "three hundred ninety-six billion, four hundred thirty-six million, one hundred ninety-six thousand, seven hundred seventy-eight".