27553311601 has 2 divisors, whose sum is σ = 27553311602. Its totient is φ = 27553311600.

The previous prime is 27553311563. The next prime is 27553311649. The reversal of 27553311601 is 10611335572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27184095376 + 369216225 = 164876^2 + 19215^2 .

It is a cyclic number.

It is not a de Polignac number, because 27553311601 - 2¹⁵ = 27553278833 is a prime.

It is not a weakly prime, because it can be changed into another prime (27553311671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13776655800 + 13776655801.

It is an arithmetic number, because the mean of its divisors is an integer number (13776655801).

Almost surely, 2^27553311601 is an apocalyptic number.

It is an amenable number.

27553311601 is a deficient number, since it is larger than the sum of its proper divisors (1).

27553311601 is an equidigital number, since it uses as much as digits as its factorization.

27553311601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 34.

The spelling of 27553311601 in words is "twenty-seven billion, five hundred fifty-three million, three hundred eleven thousand, six hundred one".