4351975927321 has 27 divisors (see below), whose sum is σ = 4864846462749. Its totient is φ = 3890232007200.

The previous prime is 4351975927309. The next prime is 4351975927331. The reversal of 4351975927321 is 1237295791534.

The square root of 4351975927321 is 2086139.

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

It can be written as a sum of positive squares in 4 ways, for example, as 2899565301721 + 1452410625600 = 1702811^2 + 1205160^2 .

It is not a de Polignac number, because 4351975927321 - 2²⁹ = 4351439056409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4351975927331) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1399797715 + ... + 1399800823.

Almost surely, 2^{4351975927321} is an apocalyptic number.

4351975927321 is the 2086139-th square number.

4351975927321 is the 1043070-th centered octagonal number.

It is an amenable number.

4351975927321 is a deficient number, since it is larger than the sum of its proper divisors (512870535428).

4351975927321 is an frugal number, since it uses more digits than its factorization.

4351975927321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6362 (or 3181 counting only the distinct ones).

The product of its digits is 14288400, while the sum is 58.

The spelling of 4351975927321 in words is "four trillion, three hundred fifty-one billion, nine hundred seventy-five million, nine hundred twenty-seven thousand, three hundred twenty-one".