655650501647 has 2 divisors, whose sum is σ = 655650501648. Its totient is φ = 655650501646.

The previous prime is 655650501511. The next prime is 655650501703. The reversal of 655650501647 is 746105056556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 655650501647 - 2²⁸ = 655382066191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 655650501595 and 655650501604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655650501047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327825250823 + 327825250824.

It is an arithmetic number, because the mean of its divisors is an integer number (327825250824).

Almost surely, 2^655650501647 is an apocalyptic number.

655650501647 is a deficient number, since it is larger than the sum of its proper divisors (1).

655650501647 is an equidigital number, since it uses as much as digits as its factorization.

655650501647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780000, while the sum is 50.

The spelling of 655650501647 in words is "six hundred fifty-five billion, six hundred fifty million, five hundred one thousand, six hundred forty-seven".