205444201155 has 16 divisors (see below), whose sum is σ = 330610788000. Its totient is φ = 108936885248.

The previous prime is 205444201147. The next prime is 205444201163. The reversal of 205444201155 is 551102444502.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (205444201147) and next prime (205444201163).

It is a cyclic number.

It is not a de Polignac number, because 205444201155 - 2³ = 205444201147 is a prime.

It is a super-2 number, since 2×205444201155² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39582030 + ... + 39587219.

It is an arithmetic number, because the mean of its divisors is an integer number (20663174250).

Almost surely, 2^205444201155 is an apocalyptic number.

205444201155 is a deficient number, since it is larger than the sum of its proper divisors (125166586845).

205444201155 is a wasteful number, since it uses less digits than its factorization.

205444201155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79169430.

The product of its (nonzero) digits is 32000, while the sum is 33.

Adding to 205444201155 its reverse (551102444502), we get a palindrome (756546645657).

The spelling of 205444201155 in words is "two hundred five billion, four hundred forty-four million, two hundred one thousand, one hundred fifty-five".