655136056391 has 2 divisors, whose sum is σ = 655136056392. Its totient is φ = 655136056390.

The previous prime is 655136056373. The next prime is 655136056423. The reversal of 655136056391 is 193650631556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 655136056391 - 2²² = 655131862087 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655136056361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327568028195 + 327568028196.

It is an arithmetic number, because the mean of its divisors is an integer number (327568028196).

Almost surely, 2^655136056391 is an apocalyptic number.

655136056391 is a deficient number, since it is larger than the sum of its proper divisors (1).

655136056391 is an equidigital number, since it uses as much as digits as its factorization.

655136056391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2187000, while the sum is 50.

The spelling of 655136056391 in words is "six hundred fifty-five billion, one hundred thirty-six million, fifty-six thousand, three hundred ninety-one".