3256801324921 has 9 divisors (see below), whose sum is σ = 3261733700421. Its totient is φ = 3251876405052.

The previous prime is 3256801324913. The next prime is 3256801324943. The reversal of 3256801324921 is 1294231086523.

The square root of 3256801324921 is 1804661.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 3256801324921 - 2³ = 3256801324913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3256801324951) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2026633500 + ... + 2026635106.

Almost surely, 2^{3256801324921} is an apocalyptic number.

3256801324921 is the 1804661-st square number.

3256801324921 is the 902331-st centered octagonal number.

It is an amenable number.

3256801324921 is a deficient number, since it is larger than the sum of its proper divisors (4932375500).

3256801324921 is an frugal number, since it uses more digits than its factorization.

3256801324921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5460 (or 2730 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 3256801324921 in words is "three trillion, two hundred fifty-six billion, eight hundred one million, three hundred twenty-four thousand, nine hundred twenty-one".