27775576651 has 2 divisors, whose sum is σ = 27775576652. Its totient is φ = 27775576650.

The previous prime is 27775576613. The next prime is 27775576681. The reversal of 27775576651 is 15667557772.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27775576651 - 2¹⁹ = 27775052363 is a prime.

It is not a weakly prime, because it can be changed into another prime (27775576681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13887788325 + 13887788326.

It is an arithmetic number, because the mean of its divisors is an integer number (13887788326).

Almost surely, 2^27775576651 is an apocalyptic number.

27775576651 is a deficient number, since it is larger than the sum of its proper divisors (1).

27775576651 is an equidigital number, since it uses as much as digits as its factorization.

27775576651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21609000, while the sum is 58.

The spelling of 27775576651 in words is "twenty-seven billion, seven hundred seventy-five million, five hundred seventy-six thousand, six hundred fifty-one".