326601963081 has 15 divisors (see below), whose sum is σ = 487894566621. Its totient is φ = 217731213108.

The previous prime is 326601963047. The next prime is 326601963089. The reversal of 326601963081 is 180369106623.

The square root of 326601963081 is 571491.

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

326601963081 is a `hidden beast` number, since 3 + 2 + 6 + 6 + 0 + 1 + 9 + 630 + 8 + 1 = 666.

326601963081 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 326601963081 - 2¹⁵ = 326601930313 is a prime.

It is a super-2 number, since 2×326601963081² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (326601963089) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 5111670 + ... + 5175168.

Almost surely, 2^326601963081 is an apocalyptic number.

326601963081 is the 571491-st square number.

326601963081 is the 285746-th centered octagonal number.

It is an amenable number.

326601963081 is a deficient number, since it is larger than the sum of its proper divisors (161292603540).

326601963081 is an frugal number, since it uses more digits than its factorization.

326601963081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127010 (or 63502 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 326601963081 in words is "three hundred twenty-six billion, six hundred one million, nine hundred sixty-three thousand, eighty-one".