27266226557 has 2 divisors, whose sum is σ = 27266226558. Its totient is φ = 27266226556.

The previous prime is 27266226551. The next prime is 27266226563. The reversal of 27266226557 is 75562266272.

It is a balanced prime because it is at equal distance from previous prime (27266226551) and next prime (27266226563).

It can be written as a sum of positive squares in only one way, i.e., 17986564996 + 9279661561 = 134114^2 + 96331^2 .

It is a cyclic number.

It is not a de Polignac number, because 27266226557 - 2¹⁰ = 27266225533 is a prime.

It is a super-2 number, since 2×27266226557² (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 (27266226551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13633113278 + 13633113279.

It is an arithmetic number, because the mean of its divisors is an integer number (13633113279).

Almost surely, 2^27266226557 is an apocalyptic number.

It is an amenable number.

27266226557 is a deficient number, since it is larger than the sum of its proper divisors (1).

27266226557 is an equidigital number, since it uses as much as digits as its factorization.

27266226557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4233600, while the sum is 50.

The spelling of 27266226557 in words is "twenty-seven billion, two hundred sixty-six million, two hundred twenty-six thousand, five hundred fifty-seven".