205134825647450 has 96 divisors (see below), whose sum is σ = 405322807680000. Its totient is φ = 76973580794880.

The previous prime is 205134825647447. The next prime is 205134825647519. The reversal of 205134825647450 is 54746528431502.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 711519227 + ... + 711807473.

It is an arithmetic number, because the mean of its divisors is an integer number (4222112580000).

Almost surely, 2^{205134825647450} is an apocalyptic number.

205134825647450 is a deficient number, since it is larger than the sum of its proper divisors (200187982032550).

205134825647450 is a wasteful number, since it uses less digits than its factorization.

205134825647450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291024 (or 291019 counting only the distinct ones).

The product of its (nonzero) digits is 32256000, while the sum is 56.

The spelling of 205134825647450 in words is "two hundred five trillion, one hundred thirty-four billion, eight hundred twenty-five million, six hundred forty-seven thousand, four hundred fifty".