655630196907 has 16 divisors (see below), whose sum is σ = 1057823511552. Its totient is φ = 352607836800.

The previous prime is 655630196899. The next prime is 655630196981. The reversal of 655630196907 is 709691036556.

It is a happy number.

It is not a de Polignac number, because 655630196907 - 2³ = 655630196899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655630196107) 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 in 15 ways as a sum of consecutive naturals, for example, 918249219 + ... + 918249932.

It is an arithmetic number, because the mean of its divisors is an integer number (66113969472).

Almost surely, 2^655630196907 is an apocalyptic number.

655630196907 is a deficient number, since it is larger than the sum of its proper divisors (402193314645).

655630196907 is a wasteful number, since it uses less digits than its factorization.

655630196907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836499178.

The product of its (nonzero) digits is 9185400, while the sum is 57.

The spelling of 655630196907 in words is "six hundred fifty-five billion, six hundred thirty million, one hundred ninety-six thousand, nine hundred seven".