283889706681649 has 2 divisors, whose sum is σ = 283889706681650. Its totient is φ = 283889706681648.

The previous prime is 283889706681563. The next prime is 283889706681661. The reversal of 283889706681649 is 946186607988382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282789290995600 + 1100415686049 = 16816340^2 + 1049007^2 .

It is a cyclic number.

It is not a de Polignac number, because 283889706681649 - 2²⁷ = 283889572463921 is a prime.

It is not a weakly prime, because it can be changed into another prime (283889706681949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141944853340824 + 141944853340825.

It is an arithmetic number, because the mean of its divisors is an integer number (141944853340825).

Almost surely, 2^{283889706681649} is an apocalyptic number.

It is an amenable number.

283889706681649 is a deficient number, since it is larger than the sum of its proper divisors (1).

283889706681649 is an equidigital number, since it uses as much as digits as its factorization.

283889706681649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12039487488, while the sum is 85.

The spelling of 283889706681649 in words is "two hundred eighty-three trillion, eight hundred eighty-nine billion, seven hundred six million, six hundred eighty-one thousand, six hundred forty-nine".