27766039541 has 2 divisors, whose sum is σ = 27766039542. Its totient is φ = 27766039540.

The previous prime is 27766039529. The next prime is 27766039573. The reversal of 27766039541 is 14593066772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16289416900 + 11476622641 = 127630^2 + 107129^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27766039541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27766039541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27766029541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13883019770 + 13883019771.

It is an arithmetic number, because the mean of its divisors is an integer number (13883019771).

Almost surely, 2^27766039541 is an apocalyptic number.

It is an amenable number.

27766039541 is a deficient number, since it is larger than the sum of its proper divisors (1).

27766039541 is an equidigital number, since it uses as much as digits as its factorization.

27766039541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1905120, while the sum is 50.

The spelling of 27766039541 in words is "twenty-seven billion, seven hundred sixty-six million, thirty-nine thousand, five hundred forty-one".