205512500354 has 16 divisors (see below), whose sum is σ = 353432732928. Its totient is φ = 87795388512.

The previous prime is 205512500243. The next prime is 205512500371. The reversal of 205512500354 is 453005215502.

It is a self number, because there is not a number n which added to its sum of digits gives 205512500354.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23445242 + ... + 23454005.

It is an arithmetic number, because the mean of its divisors is an integer number (22089545808).

Almost surely, 2^205512500354 is an apocalyptic number.

205512500354 is a deficient number, since it is larger than the sum of its proper divisors (147920232574).

205512500354 is a wasteful number, since it uses less digits than its factorization.

205512500354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46899569.

The product of its (nonzero) digits is 30000, while the sum is 32.

Adding to 205512500354 its reverse (453005215502), we get a palindrome (658517715856).

The spelling of 205512500354 in words is "two hundred five billion, five hundred twelve million, five hundred thousand, three hundred fifty-four".