326747663334421 has 16 divisors (see below), whose sum is σ = 380122777584000. Its totient is φ = 275055958844928.

The previous prime is 326747663334349. The next prime is 326747663334461. The reversal of 326747663334421 is 124433366747623.

It is a cyclic number.

It is not a de Polignac number, because 326747663334421 - 2¹⁷ = 326747663203349 is a prime.

It is a super-3 number, since 3×326747663334421³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 326747663334421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326747663334461) 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, 382514596 + ... + 383367853.

It is an arithmetic number, because the mean of its divisors is an integer number (23757673599000).

Almost surely, 2^{326747663334421} is an apocalyptic number.

It is an amenable number.

326747663334421 is a deficient number, since it is larger than the sum of its proper divisors (53375114249579).

326747663334421 is a wasteful number, since it uses less digits than its factorization.

326747663334421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765883548.

The product of its digits is 219469824, while the sum is 61.

The spelling of 326747663334421 in words is "three hundred twenty-six trillion, seven hundred forty-seven billion, six hundred sixty-three million, three hundred thirty-four thousand, four hundred twenty-one".