401930960646 has 16 divisors (see below), whose sum is σ = 804490444800. Its totient is φ = 133872232968.

The previous prime is 401930960609. The next prime is 401930960687. The reversal of 401930960646 is 646069039104.

It is a junction number, because it is equal to n+sod(n) for n = 401930960595 and 401930960604.

It is a congruent number.

It is an unprimeable number.

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, 26180166 + ... + 26195513.

It is an arithmetic number, because the mean of its divisors is an integer number (50280652800).

Almost surely, 2^401930960646 is an apocalyptic number.

401930960646 is an abundant number, since it is smaller than the sum of its proper divisors (402559484154).

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

401930960646 is a wasteful number, since it uses less digits than its factorization.

401930960646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52376963.

The product of its (nonzero) digits is 839808, while the sum is 48.

The spelling of 401930960646 in words is "four hundred one billion, nine hundred thirty million, nine hundred sixty thousand, six hundred forty-six".