655630513222 has 8 divisors (see below), whose sum is σ = 991189437696. Its totient is φ = 325234033992.

The previous prime is 655630513217. The next prime is 655630513229. The reversal of 655630513222 is 222315036556.

655630513222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655630513229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1290610993 + ... + 1290611500.

It is an arithmetic number, because the mean of its divisors is an integer number (123898679712).

Almost surely, 2^655630513222 is an apocalyptic number.

655630513222 is a deficient number, since it is larger than the sum of its proper divisors (335558924474).

655630513222 is a wasteful number, since it uses less digits than its factorization.

655630513222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581222622.

The product of its (nonzero) digits is 324000, while the sum is 40.

Adding to 655630513222 its reverse (222315036556), we get a palindrome (877945549778).

The spelling of 655630513222 in words is "six hundred fifty-five billion, six hundred thirty million, five hundred thirteen thousand, two hundred twenty-two".