27345036889 has 2 divisors, whose sum is σ = 27345036890. Its totient is φ = 27345036888.

The previous prime is 27345036883. The next prime is 27345036923. The reversal of 27345036889 is 98863054372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18939264400 + 8405772489 = 137620^2 + 91683^2 .

It is a cyclic number.

It is not a de Polignac number, because 27345036889 - 2⁵ = 27345036857 is a prime.

It is not a weakly prime, because it can be changed into another prime (27345036883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13672518444 + 13672518445.

It is an arithmetic number, because the mean of its divisors is an integer number (13672518445).

Almost surely, 2^27345036889 is an apocalyptic number.

It is an amenable number.

27345036889 is a deficient number, since it is larger than the sum of its proper divisors (1).

27345036889 is an equidigital number, since it uses as much as digits as its factorization.

27345036889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 27345036889 in words is "twenty-seven billion, three hundred forty-five million, thirty-six thousand, eight hundred eighty-nine".