326128208207 has 16 divisors (see below), whose sum is σ = 343982751840. Its totient is φ = 308722657152.

The previous prime is 326128208167. The next prime is 326128208213. The reversal of 326128208207 is 702802821623.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-326128208207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326128208407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2118953 + ... + 2267645.

It is an arithmetic number, because the mean of its divisors is an integer number (21498921990).

Almost surely, 2^326128208207 is an apocalyptic number.

326128208207 is a deficient number, since it is larger than the sum of its proper divisors (17854543633).

326128208207 is a wasteful number, since it uses less digits than its factorization.

326128208207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150202.

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 326128208207 in words is "three hundred twenty-six billion, one hundred twenty-eight million, two hundred eight thousand, two hundred seven".