27153507181 has 2 divisors, whose sum is σ = 27153507182. Its totient is φ = 27153507180.

The previous prime is 27153507151. The next prime is 27153507191. The reversal of 27153507181 is 18170535172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18643444681 + 8510062500 = 136541^2 + 92250^2 .

It is a cyclic number.

It is not a de Polignac number, because 27153507181 - 2²¹ = 27151410029 is a prime.

It is a super-2 number, since 2×27153507181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27153507131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13576753590 + 13576753591.

It is an arithmetic number, because the mean of its divisors is an integer number (13576753591).

Almost surely, 2^27153507181 is an apocalyptic number.

It is an amenable number.

27153507181 is a deficient number, since it is larger than the sum of its proper divisors (1).

27153507181 is an equidigital number, since it uses as much as digits as its factorization.

27153507181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58800, while the sum is 40.

The spelling of 27153507181 in words is "twenty-seven billion, one hundred fifty-three million, five hundred seven thousand, one hundred eighty-one".