205606222653 has 16 divisors (see below), whose sum is σ = 298546637760. Its totient is φ = 125105253504.

The previous prime is 205606222639. The next prime is 205606222667. The reversal of 205606222653 is 356222606502.

It is an interprime number because it is at equal distance from previous prime (205606222639) and next prime (205606222667).

It is a de Polignac number, because none of the positive numbers 2^k-205606222653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205606222753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29614251 + ... + 29621192.

It is an arithmetic number, because the mean of its divisors is an integer number (18659164860).

Almost surely, 2^205606222653 is an apocalyptic number.

It is an amenable number.

205606222653 is a deficient number, since it is larger than the sum of its proper divisors (92940415107).

205606222653 is a wasteful number, since it uses less digits than its factorization.

205606222653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59235548.

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 205606222653 in words is "two hundred five billion, six hundred six million, two hundred twenty-two thousand, six hundred fifty-three".