204134112157 has 2 divisors, whose sum is σ = 204134112158. Its totient is φ = 204134112156.

The previous prime is 204134112079. The next prime is 204134112181. The reversal of 204134112157 is 751211431402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105524923716 + 98609188441 = 324846^2 + 314021^2 .

It is a cyclic number.

It is not a de Polignac number, because 204134112157 - 2¹⁵ = 204134079389 is a prime.

It is a super-3 number, since 3×204134112157³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204134112197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102067056078 + 102067056079.

It is an arithmetic number, because the mean of its divisors is an integer number (102067056079).

Almost surely, 2^204134112157 is an apocalyptic number.

It is an amenable number.

204134112157 is a deficient number, since it is larger than the sum of its proper divisors (1).

204134112157 is an equidigital number, since it uses as much as digits as its factorization.

204134112157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

Adding to 204134112157 its reverse (751211431402), we get a palindrome (955345543559).

The spelling of 204134112157 in words is "two hundred four billion, one hundred thirty-four million, one hundred twelve thousand, one hundred fifty-seven".