55605011111 has 8 divisors (see below), whose sum is σ = 59888970624. Its totient is φ = 51322001760.

The previous prime is 55605011101. The next prime is 55605011129. The reversal of 55605011111 is 11111050655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55605011111 - 2¹⁸ = 55604748967 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 (55605011101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113591 + ... + 352296.

It is an arithmetic number, because the mean of its divisors is an integer number (7486121328).

Almost surely, 2^55605011111 is an apocalyptic number.

55605011111 is a deficient number, since it is larger than the sum of its proper divisors (4283959513).

55605011111 is a wasteful number, since it uses less digits than its factorization.

55605011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475081.

The product of its (nonzero) digits is 750, while the sum is 26.

Adding to 55605011111 its reverse (11111050655), we get a palindrome (66716061766).

The spelling of 55605011111 in words is "fifty-five billion, six hundred five million, eleven thousand, one hundred eleven".