205622734623242 has 4 divisors (see below), whose sum is σ = 308434101934866. Its totient is φ = 102811367311620.

The previous prime is 205622734623239. The next prime is 205622734623259. The reversal of 205622734623242 is 242326437226502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 182119640319241 + 23503094304001 = 13495171^2 + 4847999^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51405683655809 + ... + 51405683655812.

Almost surely, 2^{205622734623242} is an apocalyptic number.

205622734623242 is a deficient number, since it is larger than the sum of its proper divisors (102811367311624).

205622734623242 is a wasteful number, since it uses less digits than its factorization.

205622734623242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102811367311623.

The product of its (nonzero) digits is 11612160, while the sum is 50.

The spelling of 205622734623242 in words is "two hundred five trillion, six hundred twenty-two billion, seven hundred thirty-four million, six hundred twenty-three thousand, two hundred forty-two".