55611011009 has 2 divisors, whose sum is σ = 55611011010. Its totient is φ = 55611011008.

The previous prime is 55611010999. The next prime is 55611011017. The reversal of 55611011009 is 90011011655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54069270784 + 1541740225 = 232528^2 + 39265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55611011009 is a prime.

It is not a weakly prime, because it can be changed into another prime (55611011809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27805505504 + 27805505505.

It is an arithmetic number, because the mean of its divisors is an integer number (27805505505).

Almost surely, 2^55611011009 is an apocalyptic number.

It is an amenable number.

55611011009 is a deficient number, since it is larger than the sum of its proper divisors (1).

55611011009 is an equidigital number, since it uses as much as digits as its factorization.

55611011009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 29.

The spelling of 55611011009 in words is "fifty-five billion, six hundred eleven million, eleven thousand, nine".