27188573016377 has 2 divisors, whose sum is σ = 27188573016378. Its totient is φ = 27188573016376.

The previous prime is 27188573016349. The next prime is 27188573016391. The reversal of 27188573016377 is 77361037588172.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20841881914681 + 6346691101696 = 4565291^2 + 2519264^2 .

It is a cyclic number.

It is not a de Polignac number, because 27188573016377 - 2¹⁶ = 27188572950841 is a prime.

It is a super-2 number, since 2×27188573016377² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27188573016277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13594286508188 + 13594286508189.

It is an arithmetic number, because the mean of its divisors is an integer number (13594286508189).

Almost surely, 2^{27188573016377} is an apocalyptic number.

It is an amenable number.

27188573016377 is a deficient number, since it is larger than the sum of its proper divisors (1).

27188573016377 is an equidigital number, since it uses as much as digits as its factorization.

27188573016377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82978560, while the sum is 65.

The spelling of 27188573016377 in words is "twenty-seven trillion, one hundred eighty-eight billion, five hundred seventy-three million, sixteen thousand, three hundred seventy-seven".