55383777555 has 32 divisors (see below), whose sum is σ = 91557734400. Its totient is φ = 28572485760.

The previous prime is 55383777529. The next prime is 55383777569. The reversal of 55383777555 is 55577738355.

It is not a de Polignac number, because 55383777555 - 2⁵ = 55383777523 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 434155 + ... + 547044.

It is an arithmetic number, because the mean of its divisors is an integer number (2861179200).

Almost surely, 2^55383777555 is an apocalyptic number.

55383777555 is a deficient number, since it is larger than the sum of its proper divisors (36173956845).

55383777555 is a wasteful number, since it uses less digits than its factorization.

55383777555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981331.

The product of its digits is 77175000, while the sum is 60.

The spelling of 55383777555 in words is "fifty-five billion, three hundred eighty-three million, seven hundred seventy-seven thousand, five hundred fifty-five".