4152066217421 has 2 divisors, whose sum is σ = 4152066217422. Its totient is φ = 4152066217420.

The previous prime is 4152066217393. The next prime is 4152066217469. The reversal of 4152066217421 is 1247126602514.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3257176705225 + 894889512196 = 1804765^2 + 945986^2 .

It is a cyclic number.

It is not a de Polignac number, because 4152066217421 - 2¹⁴ = 4152066201037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4152066216421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2076033108710 + 2076033108711.

It is an arithmetic number, because the mean of its divisors is an integer number (2076033108711).

Almost surely, 2^{4152066217421} is an apocalyptic number.

It is an amenable number.

4152066217421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4152066217421 is an equidigital number, since it uses as much as digits as its factorization.

4152066217421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 4152066217421 in words is "four trillion, one hundred fifty-two billion, sixty-six million, two hundred seventeen thousand, four hundred twenty-one".