55505010111 has 16 divisors (see below), whose sum is σ = 74891174400. Its totient is φ = 36561681728.

The previous prime is 55505010091. The next prime is 55505010163. The reversal of 55505010111 is 11101050555.

It is a cyclic number.

It is not a de Polignac number, because 55505010111 - 2¹⁸ = 55504747967 is a prime.

It is a super-2 number, since 2×55505010111² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55505010181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308170 + ... + 453848.

It is an arithmetic number, because the mean of its divisors is an integer number (4680698400).

Almost surely, 2^55505010111 is an apocalyptic number.

55505010111 is a deficient number, since it is larger than the sum of its proper divisors (19386164289).

55505010111 is a wasteful number, since it uses less digits than its factorization.

55505010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147198.

The product of its (nonzero) digits is 625, while the sum is 24.

Adding to 55505010111 its reverse (11101050555), we get a palindrome (66606060666).

The spelling of 55505010111 in words is "fifty-five billion, five hundred five million, ten thousand, one hundred eleven".