204455256143653 has 8 divisors (see below), whose sum is σ = 204517482844896. Its totient is φ = 204393035070000.

The previous prime is 204455256143617. The next prime is 204455256143767. The reversal of 204455256143653 is 356341652554402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204455256143653 - 2⁹ = 204455256143141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204455256143594 and 204455256143603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204455256143603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71845498 + ... + 74637028.

It is an arithmetic number, because the mean of its divisors is an integer number (25564685355612).

Almost surely, 2^{204455256143653} is an apocalyptic number.

It is an amenable number.

204455256143653 is a deficient number, since it is larger than the sum of its proper divisors (62226701243).

204455256143653 is a wasteful number, since it uses less digits than its factorization.

204455256143653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2813795.

The product of its (nonzero) digits is 51840000, while the sum is 55.

The spelling of 204455256143653 in words is "two hundred four trillion, four hundred fifty-five billion, two hundred fifty-six million, one hundred forty-three thousand, six hundred fifty-three".