655220022361 has 4 divisors (see below), whose sum is σ = 672928671652. Its totient is φ = 637511373072.

The previous prime is 655220022341. The next prime is 655220022551. The reversal of 655220022361 is 163220022556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 447346945600 + 207873076761 = 668840^2 + 455931^2 .

It is a cyclic number.

It is not a de Polignac number, because 655220022361 - 2¹⁷ = 655219891289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655220022341) 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, 8854324590 + ... + 8854324663.

It is an arithmetic number, because the mean of its divisors is an integer number (168232167913).

Almost surely, 2^655220022361 is an apocalyptic number.

It is an amenable number.

655220022361 is a deficient number, since it is larger than the sum of its proper divisors (17708649291).

655220022361 is a wasteful number, since it uses less digits than its factorization.

655220022361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17708649290.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 655220022361 in words is "six hundred fifty-five billion, two hundred twenty million, twenty-two thousand, three hundred sixty-one".