2175144347081 has 2 divisors, whose sum is σ = 2175144347082. Its totient is φ = 2175144347080.

The previous prime is 2175144347053. The next prime is 2175144347107. The reversal of 2175144347081 is 1807434415712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2170660035856 + 4484311225 = 1473316^2 + 66965^2 .

It is a cyclic number.

It is not a de Polignac number, because 2175144347081 - 2³⁴ = 2157964477897 is a prime.

It is a super-2 number, since 2×2175144347081² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2175144347021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1087572173540 + 1087572173541.

It is an arithmetic number, because the mean of its divisors is an integer number (1087572173541).

Almost surely, 2^{2175144347081} is an apocalyptic number.

It is an amenable number.

2175144347081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2175144347081 is an equidigital number, since it uses as much as digits as its factorization.

2175144347081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 752640, while the sum is 47.

The spelling of 2175144347081 in words is "two trillion, one hundred seventy-five billion, one hundred forty-four million, three hundred forty-seven thousand, eighty-one".