55856185138 has 16 divisors (see below), whose sum is σ = 91316324736. Its totient is φ = 25469177040.

The previous prime is 55856185129. The next prime is 55856185141. The reversal of 55856185138 is 83158165855.

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, 12939498 + ... + 12943813.

It is an arithmetic number, because the mean of its divisors is an integer number (5707270296).

Almost surely, 2^55856185138 is an apocalyptic number.

55856185138 is a deficient number, since it is larger than the sum of its proper divisors (35460139598).

55856185138 is a wasteful number, since it uses less digits than its factorization.

55856185138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25883409.

The product of its digits is 5760000, while the sum is 55.

The spelling of 55856185138 in words is "fifty-five billion, eight hundred fifty-six million, one hundred eighty-five thousand, one hundred thirty-eight".