27529438693 has 2 divisors, whose sum is σ = 27529438694. Its totient is φ = 27529438692.

The previous prime is 27529438633. The next prime is 27529438709. The reversal of 27529438693 is 39683492572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16184419524 + 11345019169 = 127218^2 + 106513^2 .

It is a cyclic number.

It is not a de Polignac number, because 27529438693 - 2¹⁷ = 27529307621 is a prime.

It is a super-3 number, since 3×27529438693³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27529438633) 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, 13764719346 + 13764719347.

It is an arithmetic number, because the mean of its divisors is an integer number (13764719347).

Almost surely, 2^27529438693 is an apocalyptic number.

It is an amenable number.

27529438693 is a deficient number, since it is larger than the sum of its proper divisors (1).

27529438693 is an equidigital number, since it uses as much as digits as its factorization.

27529438693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19595520, while the sum is 58.

The spelling of 27529438693 in words is "twenty-seven billion, five hundred twenty-nine million, four hundred thirty-eight thousand, six hundred ninety-three".