222644655245661 has 64 divisors (see below), whose sum is σ = 325116094464000. Its totient is φ = 134408558592000.

The previous prime is 222644655245653. The next prime is 222644655245699. The reversal of 222644655245661 is 166542556446222.

It is not a de Polignac number, because 222644655245661 - 2³ = 222644655245653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222644655245595 and 222644655245604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222644655246661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21340419901 + ... + 21340430333.

It is an arithmetic number, because the mean of its divisors is an integer number (5079938976000).

Almost surely, 2^{222644655245661} is an apocalyptic number.

It is an amenable number.

222644655245661 is a deficient number, since it is larger than the sum of its proper divisors (102471439218339).

222644655245661 is a wasteful number, since it uses less digits than its factorization.

222644655245661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13298.

The product of its digits is 165888000, while the sum is 60.

The spelling of 222644655245661 in words is "two hundred twenty-two trillion, six hundred forty-four billion, six hundred fifty-five million, two hundred forty-five thousand, six hundred sixty-one".