655216221196 has 24 divisors (see below), whose sum is σ = 1155233784320. Its totient is φ = 325150880400.

The previous prime is 655216221167. The next prime is 655216221197. The reversal of 655216221196 is 691122612556.

It is not an unprimeable number, because it can be changed into a prime (655216221197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1638541 + ... + 1998811.

Almost surely, 2^655216221196 is an apocalyptic number.

It is an amenable number.

655216221196 is a deficient number, since it is larger than the sum of its proper divisors (500017563124).

655216221196 is a wasteful number, since it uses less digits than its factorization.

655216221196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363685 (or 363683 counting only the distinct ones).

The product of its digits is 388800, while the sum is 46.

The spelling of 655216221196 in words is "six hundred fifty-five billion, two hundred sixteen million, two hundred twenty-one thousand, one hundred ninety-six".