204560120264654 has 128 divisors (see below), whose sum is σ = 414511933980672. Its totient is φ = 73259997027840.

The previous prime is 204560120264653. The next prime is 204560120264657. The reversal of 204560120264654 is 456462021065402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 204560120264599 and 204560120264608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204560120264653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1464180167 + ... + 1464319869.

It is an arithmetic number, because the mean of its divisors is an integer number (3238374484224).

Almost surely, 2^{204560120264654} is an apocalyptic number.

204560120264654 is an abundant number, since it is smaller than the sum of its proper divisors (209951813716018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204560120264654 is a wasteful number, since it uses less digits than its factorization.

204560120264654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152790.

The product of its (nonzero) digits is 2764800, while the sum is 47.

The spelling of 204560120264654 in words is "two hundred four trillion, five hundred sixty billion, one hundred twenty million, two hundred sixty-four thousand, six hundred fifty-four".