55168461409 has 4 divisors (see below), whose sum is σ = 55236655620. Its totient is φ = 55100267200.

The previous prime is 55168461407. The next prime is 55168461437. The reversal of 55168461409 is 90416486155.

It is a happy number.

55168461409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36842883025 + 18325578384 = 191945^2 + 135372^2 .

It is a cyclic number.

It is not a de Polignac number, because 55168461409 - 2¹ = 55168461407 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55168461401) 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, 34095892 + ... + 34097509.

It is an arithmetic number, because the mean of its divisors is an integer number (13809163905).

Almost surely, 2^55168461409 is an apocalyptic number.

It is an amenable number.

55168461409 is a deficient number, since it is larger than the sum of its proper divisors (68194211).

55168461409 is an equidigital number, since it uses as much as digits as its factorization.

55168461409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68194210.

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 55168461409 in words is "fifty-five billion, one hundred sixty-eight million, four hundred sixty-one thousand, four hundred nine".