55511132461111 has 4 divisors (see below), whose sum is σ = 55511511763792. Its totient is φ = 55510753158432.

The previous prime is 55511132461087. The next prime is 55511132461117. The reversal of 55511132461111 is 11116423111555.

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 55511132461111 - 2¹⁷ = 55511132330039 is a prime.

It is a super-2 number, since 2×55511132461111² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55511132461117) 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, 189431730 + ... + 189724543.

It is an arithmetic number, because the mean of its divisors is an integer number (13877877940948).

Almost surely, 2^{55511132461111} is an apocalyptic number.

55511132461111 is a deficient number, since it is larger than the sum of its proper divisors (379302681).

55511132461111 is a wasteful number, since it uses less digits than its factorization.

55511132461111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379302680.

The product of its digits is 18000, while the sum is 37.

Adding to 55511132461111 its reverse (11116423111555), we get a palindrome (66627555572666).

The spelling of 55511132461111 in words is "fifty-five trillion, five hundred eleven billion, one hundred thirty-two million, four hundred sixty-one thousand, one hundred eleven".