205305555532 has 24 divisors (see below), whose sum is σ = 447939394560. Its totient is φ = 79989177360.

The previous prime is 205305555527. The next prime is 205305555551. The reversal of 205305555532 is 235555503502.

It is a happy number.

205305555532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×205305555532² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333287932 + ... + 333288547.

It is an arithmetic number, because the mean of its divisors is an integer number (18664141440).

Almost surely, 2^205305555532 is an apocalyptic number.

205305555532 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

205305555532 is an abundant number, since it is smaller than the sum of its proper divisors (242633839028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205305555532 is a wasteful number, since it uses less digits than its factorization.

205305555532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666576501 (or 666576499 counting only the distinct ones).

The product of its (nonzero) digits is 562500, while the sum is 40.

The spelling of 205305555532 in words is "two hundred five billion, three hundred five million, five hundred fifty-five thousand, five hundred thirty-two".