205113516064 has 48 divisors (see below), whose sum is σ = 405318512088. Its totient is φ = 102175854592.

The previous prime is 205113516001. The next prime is 205113516079. The reversal of 205113516064 is 460615311502.

It can be written as a sum of positive squares in 4 ways, for example, as 128665690000 + 76447826064 = 358700^2 + 276492^2 .

It is a super-3 number, since 3×205113516064³ (a number of 35 digits) contains 333 as substring.

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, 22444104 + ... + 22453240.

Almost surely, 2^205113516064 is an apocalyptic number.

It is an amenable number.

205113516064 is a deficient number, since it is larger than the sum of its proper divisors (200204996024).

205113516064 is a wasteful number, since it uses less digits than its factorization.

205113516064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11677 (or 11669 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 205113516064 its reverse (460615311502), we get a palindrome (665728827566).

The spelling of 205113516064 in words is "two hundred five billion, one hundred thirteen million, five hundred sixteen thousand, sixty-four".