326144595381 has 16 divisors (see below), whose sum is σ = 474649072128. Its totient is φ = 197556335600.

The previous prime is 326144595311. The next prime is 326144595443. The reversal of 326144595381 is 183595441623.

It is a cyclic number.

It is not a de Polignac number, because 326144595381 - 2⁹ = 326144594869 is a prime.

It is a super-2 number, since 2×326144595381² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326144595311) 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, 2614515 + ... + 2736416.

It is an arithmetic number, because the mean of its divisors is an integer number (29665567008).

Almost surely, 2^326144595381 is an apocalyptic number.

It is an amenable number.

326144595381 is a deficient number, since it is larger than the sum of its proper divisors (148504476747).

326144595381 is a wasteful number, since it uses less digits than its factorization.

326144595381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5352792.

The product of its digits is 3110400, while the sum is 51.

The spelling of 326144595381 in words is "three hundred twenty-six billion, one hundred forty-four million, five hundred ninety-five thousand, three hundred eighty-one".