55168143909 has 8 divisors (see below), whose sum is σ = 73579128960. Its totient is φ = 36767960736.

The previous prime is 55168143893. The next prime is 55168143971. The reversal of 55168143909 is 90934186155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55168143909 - 2⁴ = 55168143893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55168143209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2688544 + ... + 2708985.

It is an arithmetic number, because the mean of its divisors is an integer number (9197391120).

Almost surely, 2^55168143909 is an apocalyptic number.

It is an amenable number.

55168143909 is a deficient number, since it is larger than the sum of its proper divisors (18410985051).

55168143909 is a wasteful number, since it uses less digits than its factorization.

55168143909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5400939.

The product of its (nonzero) digits is 1166400, while the sum is 51.

The spelling of 55168143909 in words is "fifty-five billion, one hundred sixty-eight million, one hundred forty-three thousand, nine hundred nine".