205215650152042 has 32 divisors (see below), whose sum is σ = 314137185909120. Its totient is φ = 100522276300800.

The previous prime is 205215650151983. The next prime is 205215650152061. The reversal of 205215650152042 is 240251056512502.

It is a super-2 number, since 2×205215650152042² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205215650151986 and 205215650152004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229559809 + ... + 230452027.

It is an arithmetic number, because the mean of its divisors is an integer number (9816787059660).

Almost surely, 2^{205215650152042} is an apocalyptic number.

205215650152042 is a deficient number, since it is larger than the sum of its proper divisors (108921535757078).

205215650152042 is a wasteful number, since it uses less digits than its factorization.

205215650152042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902878.

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

The spelling of 205215650152042 in words is "two hundred five trillion, two hundred fifteen billion, six hundred fifty million, one hundred fifty-two thousand, forty-two".