204455256143654 has 8 divisors (see below), whose sum is σ = 306880361930520. Its totient is φ = 102161802166816.

The previous prime is 204455256143617. The next prime is 204455256143767. The reversal of 204455256143654 is 456341652554402.

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

It is a super-2 number, since 2×204455256143654² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 204455256143654.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32912948624 + ... + 32912954835.

It is an arithmetic number, because the mean of its divisors is an integer number (38360045241315).

Almost surely, 2^{204455256143654} is an apocalyptic number.

204455256143654 is a deficient number, since it is larger than the sum of its proper divisors (102425105786866).

204455256143654 is a wasteful number, since it uses less digits than its factorization.

204455256143654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65825905014.

The product of its (nonzero) digits is 69120000, while the sum is 56.

The spelling of 204455256143654 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-four".