27097885622681 has 2 divisors, whose sum is σ = 27097885622682. Its totient is φ = 27097885622680.

The previous prime is 27097885622651. The next prime is 27097885622749. The reversal of 27097885622681 is 18622658879072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25791070837081 + 1306814785600 = 5078491^2 + 1143160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27097885622681 is a prime.

It is a super-2 number, since 2×27097885622681² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27097885622651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13548942811340 + 13548942811341.

It is an arithmetic number, because the mean of its divisors is an integer number (13548942811341).

Almost surely, 2^{27097885622681} is an apocalyptic number.

It is an amenable number.

27097885622681 is a deficient number, since it is larger than the sum of its proper divisors (1).

27097885622681 is an equidigital number, since it uses as much as digits as its factorization.

27097885622681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 325140480, while the sum is 71.

The spelling of 27097885622681 in words is "twenty-seven trillion, ninety-seven billion, eight hundred eighty-five million, six hundred twenty-two thousand, six hundred eighty-one".