271561040205 has 384 divisors, whose sum is σ = 586878566400. Its totient is φ = 106077081600.

The previous prime is 271561040203. The next prime is 271561040207. The reversal of 271561040205 is 502040165172.

It is an interprime number because it is at equal distance from previous prime (271561040203) and next prime (271561040207).

It is not a de Polignac number, because 271561040205 - 2¹ = 271561040203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (271561040203) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 716519706 + ... + 716520084.

It is an arithmetic number, because the mean of its divisors is an integer number (1528329600).

Almost surely, 2^271561040205 is an apocalyptic number.

It is an amenable number.

271561040205 is an abundant number, since it is smaller than the sum of its proper divisors (315317526195).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

271561040205 is a wasteful number, since it uses less digits than its factorization.

271561040205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The spelling of 271561040205 in words is "two hundred seventy-one billion, five hundred sixty-one million, forty thousand, two hundred five".