27153501181 has 2 divisors, whose sum is σ = 27153501182. Its totient is φ = 27153501180.

The previous prime is 27153501119. The next prime is 27153501233. The reversal of 27153501181 is 18110535172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24105357081 + 3048144100 = 155259^2 + 55210^2 .

It is a cyclic number.

It is not a de Polignac number, because 27153501181 - 2²³ = 27145112573 is a prime.

It is a super-2 number, since 2×27153501181² (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 (27153507181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13576750590 + 13576750591.

It is an arithmetic number, because the mean of its divisors is an integer number (13576750591).

Almost surely, 2^27153501181 is an apocalyptic number.

It is an amenable number.

27153501181 is a deficient number, since it is larger than the sum of its proper divisors (1).

27153501181 is an equidigital number, since it uses as much as digits as its factorization.

27153501181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 34.

The spelling of 27153501181 in words is "twenty-seven billion, one hundred fifty-three million, five hundred one thousand, one hundred eighty-one".