655630196899 has 2 divisors, whose sum is σ = 655630196900. Its totient is φ = 655630196898.

The previous prime is 655630196807. The next prime is 655630196981. The reversal of 655630196899 is 998691036556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 655630196899 - 2³⁵ = 621270458531 is a prime.

It is not a weakly prime, because it can be changed into another prime (655630116899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327815098449 + 327815098450.

It is an arithmetic number, because the mean of its divisors is an integer number (327815098450).

Almost surely, 2^655630196899 is an apocalyptic number.

655630196899 is a deficient number, since it is larger than the sum of its proper divisors (1).

655630196899 is an equidigital number, since it uses as much as digits as its factorization.

655630196899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94478400, while the sum is 67.

The spelling of 655630196899 in words is "six hundred fifty-five billion, six hundred thirty million, one hundred ninety-six thousand, eight hundred ninety-nine".