4352682668021 has 2 divisors, whose sum is σ = 4352682668022. Its totient is φ = 4352682668020.

The previous prime is 4352682668017. The next prime is 4352682668027. The reversal of 4352682668021 is 1208662862534.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4344931802500 + 7750865521 = 2084450^2 + 88039^2 .

It is a cyclic number.

It is not a de Polignac number, because 4352682668021 - 2² = 4352682668017 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4352682668027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2176341334010 + 2176341334011.

It is an arithmetic number, because the mean of its divisors is an integer number (2176341334011).

Almost surely, 2^{4352682668021} is an apocalyptic number.

It is an amenable number.

4352682668021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4352682668021 is an equidigital number, since it uses as much as digits as its factorization.

4352682668021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6635520, while the sum is 53.

The spelling of 4352682668021 in words is "four trillion, three hundred fifty-two billion, six hundred eighty-two million, six hundred sixty-eight thousand, twenty-one".