168958376563201 has 3 divisors (see below), whose sum is σ = 168958389561601. Its totient is φ = 168958363564802.

The previous prime is 168958376563169. The next prime is 168958376563213. The reversal of 168958376563201 is 102365673859861.

It is a happy number.

The square root of 168958376563201 is 12998399.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 168958376563201 - 2⁵ = 168958376563169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168958376563001) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6499200 + ... + 19497598.

Almost surely, 2^{168958376563201} is an apocalyptic number.

168958376563201 is the 12998399-th square number.

168958376563201 is the 6499200-th centered octagonal number.

It is an amenable number.

168958376563201 is a deficient number, since it is larger than the sum of its proper divisors (12998400).

168958376563201 is an frugal number, since it uses more digits than its factorization.

168958376563201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25996798 (or 12998399 counting only the distinct ones).

The product of its (nonzero) digits is 391910400, while the sum is 70.

The spelling of 168958376563201 in words is "one hundred sixty-eight trillion, nine hundred fifty-eight billion, three hundred seventy-six million, five hundred sixty-three thousand, two hundred one".