205743137141 has 4 divisors (see below), whose sum is σ = 205758576972. Its totient is φ = 205727697312.

The previous prime is 205743137137. The next prime is 205743137161. The reversal of 205743137141 is 141731347502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45646322500 + 160096814641 = 213650^2 + 400121^2 .

It is a cyclic number.

It is not a de Polignac number, because 205743137141 - 2² = 205743137137 is a prime.

It is a super-3 number, since 3×205743137141³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205743137095 and 205743137104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205743137161) 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, 7699910 + ... + 7726583.

It is an arithmetic number, because the mean of its divisors is an integer number (51439644243).

Almost surely, 2^205743137141 is an apocalyptic number.

It is an amenable number.

205743137141 is a deficient number, since it is larger than the sum of its proper divisors (15439831).

205743137141 is a wasteful number, since it uses less digits than its factorization.

205743137141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15439830.

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 205743137141 in words is "two hundred five billion, seven hundred forty-three million, one hundred thirty-seven thousand, one hundred forty-one".