2816863401421 has 2 divisors, whose sum is σ = 2816863401422. Its totient is φ = 2816863401420.

The previous prime is 2816863401371. The next prime is 2816863401511. The reversal of 2816863401421 is 1241043686182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2816821798921 + 41602500 = 1678339^2 + 6450^2 .

It is a cyclic number.

It is not a de Polignac number, because 2816863401421 - 2¹⁷ = 2816863270349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2816869401421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1408431700710 + 1408431700711.

It is an arithmetic number, because the mean of its divisors is an integer number (1408431700711).

Almost surely, 2^{2816863401421} is an apocalyptic number.

It is an amenable number.

2816863401421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2816863401421 is an equidigital number, since it uses as much as digits as its factorization.

2816863401421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 2816863401421 in words is "two trillion, eight hundred sixteen billion, eight hundred sixty-three million, four hundred one thousand, four hundred twenty-one".