271887099749 has 2 divisors, whose sum is σ = 271887099750. Its totient is φ = 271887099748.

The previous prime is 271887099721. The next prime is 271887099793. The reversal of 271887099749 is 947990788172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220389874849 + 51497224900 = 469457^2 + 226930^2 .

It is a cyclic number.

It is not a de Polignac number, because 271887099749 - 2¹⁶ = 271887034213 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (271887099049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135943549874 + 135943549875.

It is an arithmetic number, because the mean of its divisors is an integer number (135943549875).

Almost surely, 2^271887099749 is an apocalyptic number.

It is an amenable number.

271887099749 is a deficient number, since it is larger than the sum of its proper divisors (1).

271887099749 is an equidigital number, since it uses as much as digits as its factorization.

271887099749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128024064, while the sum is 71.

The spelling of 271887099749 in words is "two hundred seventy-one billion, eight hundred eighty-seven million, ninety-nine thousand, seven hundred forty-nine".