2204863873781 has 2 divisors, whose sum is σ = 2204863873782. Its totient is φ = 2204863873780.

The previous prime is 2204863873769. The next prime is 2204863873783. The reversal of 2204863873781 is 1873783684022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2179210726225 + 25653147556 = 1476215^2 + 160166^2 .

It is a cyclic number.

It is not a de Polignac number, because 2204863873781 - 2²⁶ = 2204796764917 is a prime.

It is a super-2 number, since 2×2204863873781² (a number of 25 digits) contains 22 as substring.

Together with 2204863873783, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2204863873781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2204863873783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1102431936890 + 1102431936891.

It is an arithmetic number, because the mean of its divisors is an integer number (1102431936891).

Almost surely, 2^{2204863873781} is an apocalyptic number.

It is an amenable number.

2204863873781 is a deficient number, since it is larger than the sum of its proper divisors (1).

2204863873781 is an equidigital number, since it uses as much as digits as its factorization.

2204863873781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21676032, while the sum is 59.

The spelling of 2204863873781 in words is "two trillion, two hundred four billion, eight hundred sixty-three million, eight hundred seventy-three thousand, seven hundred eighty-one".