163943056388 has 12 divisors (see below), whose sum is σ = 287073504732. Its totient is φ = 81922055040.

The previous prime is 163943056369. The next prime is 163943056391. The reversal of 163943056388 is 883650349361.

It can be written as a sum of positive squares in 2 ways, for example, as 17768356804 + 146174699584 = 133298^2 + 382328^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12360833 + ... + 12374088.

It is an arithmetic number, because the mean of its divisors is an integer number (23922792061).

Almost surely, 2^163943056388 is an apocalyptic number.

It is an amenable number.

163943056388 is a deficient number, since it is larger than the sum of its proper divisors (123130448344).

163943056388 is a wasteful number, since it uses less digits than its factorization.

163943056388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24736582 (or 24736580 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 56.

The spelling of 163943056388 in words is "one hundred sixty-three billion, nine hundred forty-three million, fifty-six thousand, three hundred eighty-eight".