27773322541 has 2 divisors, whose sum is σ = 27773322542. Its totient is φ = 27773322540.

The previous prime is 27773322487. The next prime is 27773322553. The reversal of 27773322541 is 14522337772.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25274322441 + 2499000100 = 158979^2 + 49990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27773322541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27773322341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13886661270 + 13886661271.

It is an arithmetic number, because the mean of its divisors is an integer number (13886661271).

Almost surely, 2^27773322541 is an apocalyptic number.

It is an amenable number.

27773322541 is a deficient number, since it is larger than the sum of its proper divisors (1).

27773322541 is an equidigital number, since it uses as much as digits as its factorization.

27773322541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 493920, while the sum is 43.

The spelling of 27773322541 in words is "twenty-seven billion, seven hundred seventy-three million, three hundred twenty-two thousand, five hundred forty-one".