55505561006111 has 4 divisors (see below), whose sum is σ = 55505957164800. Its totient is φ = 55505164847424.

The previous prime is 55505561006107. The next prime is 55505561006173. The reversal of 55505561006111 is 11160016550555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55505561006111 - 2² = 55505561006107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55505561006101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197869106 + ... + 198149423.

It is an arithmetic number, because the mean of its divisors is an integer number (13876489291200).

Almost surely, 2^{55505561006111} is an apocalyptic number.

55505561006111 is a deficient number, since it is larger than the sum of its proper divisors (396158689).

55505561006111 is a wasteful number, since it uses less digits than its factorization.

55505561006111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396158688.

The product of its (nonzero) digits is 112500, while the sum is 41.

Adding to 55505561006111 its reverse (11160016550555), we get a palindrome (66665577556666).

The spelling of 55505561006111 in words is "fifty-five trillion, five hundred five billion, five hundred sixty-one million, six thousand, one hundred eleven".