55118343428 has 24 divisors (see below), whose sum is σ = 100032128280. Its totient is φ = 26542476800.

The previous prime is 55118343383. The next prime is 55118343479. The reversal of 55118343428 is 82434381155.

It can be written as a sum of positive squares in 4 ways, for example, as 43194140224 + 11924203204 = 207832^2 + 109198^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545951 + ... + 638982.

It is an arithmetic number, because the mean of its divisors is an integer number (4168005345).

Almost surely, 2^55118343428 is an apocalyptic number.

55118343428 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

55118343428 is a deficient number, since it is larger than the sum of its proper divisors (44913784852).

55118343428 is a wasteful number, since it uses less digits than its factorization.

55118343428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185367 (or 1185365 counting only the distinct ones).

The product of its digits is 460800, while the sum is 44.

The spelling of 55118343428 in words is "fifty-five billion, one hundred eighteen million, three hundred forty-three thousand, four hundred twenty-eight".