205316605444512 has 48 divisors (see below), whose sum is σ = 539438592786912. Its totient is φ = 68377598196480.

The previous prime is 205316605444507. The next prime is 205316605444543. The reversal of 205316605444512 is 215444506613502.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×205316605444512² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 957240414 + ... + 957454877.

It is an arithmetic number, because the mean of its divisors is an integer number (11238304016394).

Almost surely, 2^{205316605444512} is an apocalyptic number.

It is an amenable number.

205316605444512 is an abundant number, since it is smaller than the sum of its proper divisors (334121987342400).

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

205316605444512 is a wasteful number, since it uses less digits than its factorization.

205316605444512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914696421 (or 1914696413 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 48.

The spelling of 205316605444512 in words is "two hundred five trillion, three hundred sixteen billion, six hundred five million, four hundred forty-four thousand, five hundred twelve".