204456654402 has 64 divisors (see below), whose sum is σ = 549030472704. Its totient is φ = 49020575040.

The previous prime is 204456654397. The next prime is 204456654403.

204456654402 is nontrivially palindromic in base 10.

204456654402 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (204456654403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17015028 + ... + 17027039.

It is an arithmetic number, because the mean of its divisors is an integer number (8578601136).

Almost surely, 2^204456654402 is an apocalyptic number.

204456654402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

204456654402 is an abundant number, since it is smaller than the sum of its proper divisors (344573818302).

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

204456654402 is a wasteful number, since it uses less digits than its factorization.

204456654402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34042103.

The product of its (nonzero) digits is 921600, while the sum is 42.

It can be divided in two parts, 204456 and 654402, that added together give a palindrome (858858).

The spelling of 204456654402 in words is "two hundred four billion, four hundred fifty-six million, six hundred fifty-four thousand, four hundred two".