204266553131 has 4 divisors (see below), whose sum is σ = 204309211200. Its totient is φ = 204223895064.

The previous prime is 204266553121. The next prime is 204266553137. The reversal of 204266553131 is 131355662402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131355662402 = 2 ⋅65677831201.

It is a cyclic number.

It is not a de Polignac number, because 204266553131 - 2³⁴ = 187086683947 is a prime.

It is a super-2 number, since 2×204266553131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204266553137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21321851 + ... + 21331428.

It is an arithmetic number, because the mean of its divisors is an integer number (51077302800).

Almost surely, 2^204266553131 is an apocalyptic number.

204266553131 is a deficient number, since it is larger than the sum of its proper divisors (42658069).

204266553131 is an equidigital number, since it uses as much as digits as its factorization.

204266553131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42658068.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 204266553131 in words is "two hundred four billion, two hundred sixty-six million, five hundred fifty-three thousand, one hundred thirty-one".