163937345655204 has 243 divisors, whose sum is σ = 457572386271819. Its totient is φ = 49452380540640.

The previous prime is 163937345655191. The next prime is 163937345655253. The reversal of 163937345655204 is 402556543739361.

The square root of 163937345655204 is 12803802.

It is a perfect power (a square), and thus also a powerful number.

163937345655204 is a `hidden beast` number, since 1 + 6 + 3 + 9 + 3 + 7 + 3 + 45 + 65 + 520 + 4 = 666.

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 80 ways as a sum of consecutive naturals, for example, 354076340277 + ... + 354076340739.

Almost surely, 2^{163937345655204} is an apocalyptic number.

163937345655204 is the 12803802-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163937345655204

163937345655204 is an abundant number, since it is smaller than the sum of its proper divisors (293635040616615).

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

163937345655204 is an equidigital number, since it uses as much as digits as its factorization.

163937345655204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796 (or 898 counting only the distinct ones).

The product of its (nonzero) digits is 244944000, while the sum is 63.

The spelling of 163937345655204 in words is "one hundred sixty-three trillion, nine hundred thirty-seven billion, three hundred forty-five million, six hundred fifty-five thousand, two hundred four".