55106743777 has 4 divisors (see below), whose sum is σ = 55124070676. Its totient is φ = 55089416880.

The previous prime is 55106743733. The next prime is 55106743781. The reversal of 55106743777 is 77734760155.

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 19801836961 + 35304906816 = 140719^2 + 187896^2 .

It is a cyclic number.

It is not a de Polignac number, because 55106743777 - 2³¹ = 52959260129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55106743277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8658678 + ... + 8665039.

It is an arithmetic number, because the mean of its divisors is an integer number (13781017669).

Almost surely, 2^55106743777 is an apocalyptic number.

It is an amenable number.

55106743777 is a deficient number, since it is larger than the sum of its proper divisors (17326899).

55106743777 is a wasteful number, since it uses less digits than its factorization.

55106743777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17326898.

The product of its (nonzero) digits is 4321800, while the sum is 52.

The spelling of 55106743777 in words is "fifty-five billion, one hundred six million, seven hundred forty-three thousand, seven hundred seventy-seven".