55441111123 has 16 divisors (see below), whose sum is σ = 60147648000. Its totient is φ = 50933943072.

The previous prime is 55441111097. The next prime is 55441111129. The reversal of 55441111123 is 32111114455.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55441111123 - 2¹³ = 55441102931 is a prime.

It is a super-2 number, since 2×55441111123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55441111091 and 55441111100.

It is not an unprimeable number, because it can be changed into a prime (55441111129) 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, 187453 + ... + 382126.

It is an arithmetic number, because the mean of its divisors is an integer number (3759228000).

Almost surely, 2^55441111123 is an apocalyptic number.

55441111123 is a deficient number, since it is larger than the sum of its proper divisors (4706536877).

55441111123 is a wasteful number, since it uses less digits than its factorization.

55441111123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569754.

The product of its digits is 2400, while the sum is 28.

Adding to 55441111123 its reverse (32111114455), we get a palindrome (87552225578).

The spelling of 55441111123 in words is "fifty-five billion, four hundred forty-one million, one hundred eleven thousand, one hundred twenty-three".