27054115381 has 2 divisors, whose sum is σ = 27054115382. Its totient is φ = 27054115380.

The previous prime is 27054115349. The next prime is 27054115441. The reversal of 27054115381 is 18351145072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16315974756 + 10738140625 = 127734^2 + 103625^2 .

It is a cyclic number.

It is not a de Polignac number, because 27054115381 - 2⁵ = 27054115349 is a prime.

It is a super-2 number, since 2×27054115381² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27054115381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27054115301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13527057690 + 13527057691.

It is an arithmetic number, because the mean of its divisors is an integer number (13527057691).

Almost surely, 2^27054115381 is an apocalyptic number.

It is an amenable number.

27054115381 is a deficient number, since it is larger than the sum of its proper divisors (1).

27054115381 is an equidigital number, since it uses as much as digits as its factorization.

27054115381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 27054115381 in words is "twenty-seven billion, fifty-four million, one hundred fifteen thousand, three hundred eighty-one".