204527673021 has 16 divisors (see below), whose sum is σ = 316050812928. Its totient is φ = 115226857200.

The previous prime is 204527673017. The next prime is 204527673043. The reversal of 204527673021 is 120376725402.

It is not a de Polignac number, because 204527673021 - 2² = 204527673017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204527673221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68585925 + ... + 68588906.

It is an arithmetic number, because the mean of its divisors is an integer number (19753175808).

Almost surely, 2^204527673021 is an apocalyptic number.

204527673021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

204527673021 is a deficient number, since it is larger than the sum of its proper divisors (111523139907).

204527673021 is a wasteful number, since it uses less digits than its factorization.

204527673021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137174912.

The product of its (nonzero) digits is 141120, while the sum is 39.

The spelling of 204527673021 in words is "two hundred four billion, five hundred twenty-seven million, six hundred seventy-three thousand, twenty-one".