204521345023 has 8 divisors (see below), whose sum is σ = 215776035200. Its totient is φ = 193315695768.

The previous prime is 204521345011. The next prime is 204521345027. The reversal of 204521345023 is 320543125402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204521345023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204521345027) 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, 12251661 + ... + 12268342.

It is an arithmetic number, because the mean of its divisors is an integer number (26972004400).

Almost surely, 2^204521345023 is an apocalyptic number.

204521345023 is a deficient number, since it is larger than the sum of its proper divisors (11254690177).

204521345023 is a wasteful number, since it uses less digits than its factorization.

204521345023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24520461.

The product of its (nonzero) digits is 28800, while the sum is 31.

The spelling of 204521345023 in words is "two hundred four billion, five hundred twenty-one million, three hundred forty-five thousand, twenty-three".