27261882521 has 2 divisors, whose sum is σ = 27261882522. Its totient is φ = 27261882520.

The previous prime is 27261882449. The next prime is 27261882553. The reversal of 27261882521 is 12528816272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26459576896 + 802305625 = 162664^2 + 28325^2 .

It is a cyclic number.

It is not a de Polignac number, because 27261882521 - 2¹⁸ = 27261620377 is a prime.

It is not a weakly prime, because it can be changed into another prime (27261882581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13630941260 + 13630941261.

It is an arithmetic number, because the mean of its divisors is an integer number (13630941261).

Almost surely, 2^27261882521 is an apocalyptic number.

It is an amenable number.

27261882521 is a deficient number, since it is larger than the sum of its proper divisors (1).

27261882521 is an equidigital number, since it uses as much as digits as its factorization.

27261882521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 215040, while the sum is 44.

The spelling of 27261882521 in words is "twenty-seven billion, two hundred sixty-one million, eight hundred eighty-two thousand, five hundred twenty-one".