27775530473 has 2 divisors, whose sum is σ = 27775530474. Its totient is φ = 27775530472.

The previous prime is 27775530469. The next prime is 27775530491. The reversal of 27775530473 is 37403557772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19855064464 + 7920466009 = 140908^2 + 88997^2 .

It is a cyclic number.

It is not a de Polignac number, because 27775530473 - 2² = 27775530469 is a prime.

It is not a weakly prime, because it can be changed into another prime (27775530463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13887765236 + 13887765237.

It is an arithmetic number, because the mean of its divisors is an integer number (13887765237).

Almost surely, 2^27775530473 is an apocalyptic number.

It is an amenable number.

27775530473 is a deficient number, since it is larger than the sum of its proper divisors (1).

27775530473 is an equidigital number, since it uses as much as digits as its factorization.

27775530473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4321800, while the sum is 50.

The spelling of 27775530473 in words is "twenty-seven billion, seven hundred seventy-five million, five hundred thirty thousand, four hundred seventy-three".