204643035454 has 32 divisors (see below), whose sum is σ = 365709012480. Its totient is φ = 84654847200.

The previous prime is 204643035343. The next prime is 204643035473. The reversal of 204643035454 is 454530346402.

It is a super-2 number, since 2×204643035454² (a number of 23 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 5018674 + ... + 5059285.

It is an arithmetic number, because the mean of its divisors is an integer number (11428406640).

Almost surely, 2^204643035454 is an apocalyptic number.

204643035454 is a deficient number, since it is larger than the sum of its proper divisors (161065977026).

204643035454 is a wasteful number, since it uses less digits than its factorization.

204643035454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10078056.

The product of its (nonzero) digits is 691200, while the sum is 40.

The spelling of 204643035454 in words is "two hundred four billion, six hundred forty-three million, thirty-five thousand, four hundred fifty-four".