55581844071 has 16 divisors (see below), whose sum is σ = 80152371936. Its totient is φ = 34057406976.

The previous prime is 55581844061. The next prime is 55581844079. The reversal of 55581844071 is 17044818555.

It is not a de Polignac number, because 55581844071 - 2⁶ = 55581844007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55581844071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55581844079) 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, 3049230 + ... + 3067403.

It is an arithmetic number, because the mean of its divisors is an integer number (5009523246).

Almost surely, 2^55581844071 is an apocalyptic number.

55581844071 is a deficient number, since it is larger than the sum of its proper divisors (24570527865).

55581844071 is a wasteful number, since it uses less digits than its factorization.

55581844071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6116882.

The product of its (nonzero) digits is 896000, while the sum is 48.

The spelling of 55581844071 in words is "fifty-five billion, five hundred eighty-one million, eight hundred forty-four thousand, seventy-one".