205344506654 has 16 divisors (see below), whose sum is σ = 353687496576. Its totient is φ = 87587703000.

The previous prime is 205344506617. The next prime is 205344506663. The reversal of 205344506654 is 456605443502.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 34754072 + ... + 34759979.

It is an arithmetic number, because the mean of its divisors is an integer number (22105468536).

Almost surely, 2^205344506654 is an apocalyptic number.

205344506654 is a deficient number, since it is larger than the sum of its proper divisors (148342989922).

205344506654 is a wasteful number, since it uses less digits than its factorization.

205344506654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69514271.

The product of its (nonzero) digits is 1728000, while the sum is 44.

The spelling of 205344506654 in words is "two hundred five billion, three hundred forty-four million, five hundred six thousand, six hundred fifty-four".