205550655112 has 32 divisors (see below), whose sum is σ = 420556989600. Its totient is φ = 93407123200.

The previous prime is 205550655103. The next prime is 205550655137. The reversal of 205550655112 is 211556055502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20439 + ... + 641497.

It is an arithmetic number, because the mean of its divisors is an integer number (13142405925).

Almost surely, 2^205550655112 is an apocalyptic number.

205550655112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

205550655112 is an abundant number, since it is smaller than the sum of its proper divisors (215006334488).

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

205550655112 is a wasteful number, since it uses less digits than its factorization.

205550655112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624837 (or 624833 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 37.

The spelling of 205550655112 in words is "two hundred five billion, five hundred fifty million, six hundred fifty-five thousand, one hundred twelve".