55505561061011 has 4 divisors (see below), whose sum is σ = 55793154641832. Its totient is φ = 55217967480192.

The previous prime is 55505561060987. The next prime is 55505561061023. The reversal of 55505561061011 is 11016016550555.

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 55505561061011 - 2¹⁴ = 55505561044627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55505561061011.

It is not an unprimeable number, because it can be changed into a prime (55505561061911) 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, 143796790121 + ... + 143796790506.

It is an arithmetic number, because the mean of its divisors is an integer number (13948288660458).

Almost surely, 2^{55505561061011} is an apocalyptic number.

55505561061011 is a deficient number, since it is larger than the sum of its proper divisors (287593580821).

55505561061011 is a wasteful number, since it uses less digits than its factorization.

55505561061011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287593580820.

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

The spelling of 55505561061011 in words is "fifty-five trillion, five hundred five billion, five hundred sixty-one million, sixty-one thousand, eleven".