326428522387 has 4 divisors (see below), whose sum is σ = 356103842616. Its totient is φ = 296753202160.

The previous prime is 326428522367. The next prime is 326428522397. The reversal of 326428522387 is 783225824623.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-326428522387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (326428522367) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 14837660098 + ... + 14837660119.

It is an arithmetic number, because the mean of its divisors is an integer number (89025960654).

Almost surely, 2^326428522387 is an apocalyptic number.

326428522387 is a deficient number, since it is larger than the sum of its proper divisors (29675320229).

326428522387 is a wasteful number, since it uses less digits than its factorization.

326428522387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29675320228.

The product of its digits is 7741440, while the sum is 52.

The spelling of 326428522387 in words is "three hundred twenty-six billion, four hundred twenty-eight million, five hundred twenty-two thousand, three hundred eighty-seven".