655863998411 has 2 divisors, whose sum is σ = 655863998412. Its totient is φ = 655863998410.

The previous prime is 655863998399. The next prime is 655863998441. The reversal of 655863998411 is 114899368556.

655863998411 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655863998411 is a prime.

It is not a weakly prime, because it can be changed into another prime (655863998441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327931999205 + 327931999206.

It is an arithmetic number, because the mean of its divisors is an integer number (327931999206).

Almost surely, 2^655863998411 is an apocalyptic number.

655863998411 is a deficient number, since it is larger than the sum of its proper divisors (1).

655863998411 is an equidigital number, since it uses as much as digits as its factorization.

655863998411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55987200, while the sum is 65.

The spelling of 655863998411 in words is "six hundred fifty-five billion, eight hundred sixty-three million, nine hundred ninety-eight thousand, four hundred eleven".