205162515050242 has 32 divisors (see below), whose sum is σ = 324483345285120. Its totient is φ = 97144019277840.

The previous prime is 205162515050189. The next prime is 205162515050243. The reversal of 205162515050242 is 242050515261502.

It is a junction number, because it is equal to n+sod(n) for n = 205162515050195 and 205162515050204.

It is not an unprimeable number, because it can be changed into a prime (205162515050243) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 11923303 + ... + 23505109.

It is an arithmetic number, because the mean of its divisors is an integer number (10140104540160).

Almost surely, 2^{205162515050242} is an apocalyptic number.

205162515050242 is a deficient number, since it is larger than the sum of its proper divisors (119320830234878).

205162515050242 is a wasteful number, since it uses less digits than its factorization.

205162515050242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11587966.

The product of its (nonzero) digits is 240000, while the sum is 40.

The spelling of 205162515050242 in words is "two hundred five trillion, one hundred sixty-two billion, five hundred fifteen million, fifty thousand, two hundred forty-two".