271354180661 has 4 divisors (see below), whose sum is σ = 275071361292. Its totient is φ = 267637000032.

The previous prime is 271354180621. The next prime is 271354180679. The reversal of 271354180661 is 166081453172.

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 48847630225 + 222506550436 = 221015^2 + 471706^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-271354180661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (271354180621) 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, 1858590206 + ... + 1858590351.

It is an arithmetic number, because the mean of its divisors is an integer number (68767840323).

Almost surely, 2^271354180661 is an apocalyptic number.

It is an amenable number.

271354180661 is a deficient number, since it is larger than the sum of its proper divisors (3717180631).

271354180661 is an equidigital number, since it uses as much as digits as its factorization.

271354180661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3717180630.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 271354180661 in words is "two hundred seventy-one billion, three hundred fifty-four million, one hundred eighty thousand, six hundred sixty-one".