326646403426161 has 24 divisors (see below), whose sum is σ = 580704717203520. Its totient is φ = 172297004004576.

The previous prime is 326646403426153. The next prime is 326646403426199. The reversal of 326646403426161 is 161624304646623.

326646403426161 is a `hidden beast` number, since 3 + 2 + 66 + 46 + 40 + 342 + 6 + 161 = 666.

It is not a de Polignac number, because 326646403426161 - 2³ = 326646403426153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 326646403426098 and 326646403426107.

It is not an unprimeable number, because it can be changed into a prime (326646403476161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199417827891 + ... + 199417829528.

It is an arithmetic number, because the mean of its divisors is an integer number (24196029883480).

Almost surely, 2^{326646403426161} is an apocalyptic number.

It is an amenable number.

326646403426161 is a deficient number, since it is larger than the sum of its proper divisors (254058313777359).

326646403426161 is a wasteful number, since it uses less digits than its factorization.

326646403426161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398835657445 (or 398835657442 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 54.

The spelling of 326646403426161 in words is "three hundred twenty-six trillion, six hundred forty-six billion, four hundred three million, four hundred twenty-six thousand, one hundred sixty-one".