55416660811 has 2 divisors, whose sum is σ = 55416660812. Its totient is φ = 55416660810.

The previous prime is 55416660797. The next prime is 55416660823. The reversal of 55416660811 is 11806661455.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55416660811 is a prime.

It is not a weakly prime, because it can be changed into another prime (55416660841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27708330405 + 27708330406.

It is an arithmetic number, because the mean of its divisors is an integer number (27708330406).

Almost surely, 2^55416660811 is an apocalyptic number.

55416660811 is a deficient number, since it is larger than the sum of its proper divisors (1).

55416660811 is an equidigital number, since it uses as much as digits as its factorization.

55416660811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 55416660811 in words is "fifty-five billion, four hundred sixteen million, six hundred sixty thousand, eight hundred eleven".