655405563629 has 2 divisors, whose sum is σ = 655405563630. Its totient is φ = 655405563628.

The previous prime is 655405563613. The next prime is 655405563653. The reversal of 655405563629 is 926365504556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 610195322500 + 45210241129 = 781150^2 + 212627^2 .

It is a cyclic number.

It is not a de Polignac number, because 655405563629 - 2⁴ = 655405563613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655405563689) 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, 327702781814 + 327702781815.

It is an arithmetic number, because the mean of its divisors is an integer number (327702781815).

Almost surely, 2^655405563629 is an apocalyptic number.

It is an amenable number.

655405563629 is a deficient number, since it is larger than the sum of its proper divisors (1).

655405563629 is an equidigital number, since it uses as much as digits as its factorization.

655405563629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160000, while the sum is 56.

The spelling of 655405563629 in words is "six hundred fifty-five billion, four hundred five million, five hundred sixty-three thousand, six hundred twenty-nine".