204433642666654 has 24 divisors (see below), whose sum is σ = 308735831907720. Its totient is φ = 101526363088032.

The previous prime is 204433642666613. The next prime is 204433642666663. The reversal of 204433642666654 is 456666246334402.

It is a super-2 number, since 2×204433642666654² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204433642666592 and 204433642666601.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1168084717 + ... + 1168259719.

It is an arithmetic number, because the mean of its divisors is an integer number (12863992996155).

Almost surely, 2^{204433642666654} is an apocalyptic number.

204433642666654 is a deficient number, since it is larger than the sum of its proper divisors (104302189241066).

204433642666654 is a wasteful number, since it uses less digits than its factorization.

204433642666654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201612 (or 201463 counting only the distinct ones).

The product of its (nonzero) digits is 358318080, while the sum is 61.

The spelling of 204433642666654 in words is "two hundred four trillion, four hundred thirty-three billion, six hundred forty-two million, six hundred sixty-six thousand, six hundred fifty-four".