55509305138 has 24 divisors (see below), whose sum is σ = 96871012992. Its totient is φ = 23786524104.

The previous prime is 55509305123. The next prime is 55509305191. The reversal of 55509305138 is 83150390555.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 791831 + ... + 859077.

It is an arithmetic number, because the mean of its divisors is an integer number (4036292208).

Almost surely, 2^55509305138 is an apocalyptic number.

55509305138 is a deficient number, since it is larger than the sum of its proper divisors (41361707854).

55509305138 is a wasteful number, since it uses less digits than its factorization.

55509305138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75686 (or 75679 counting only the distinct ones).

The product of its (nonzero) digits is 405000, while the sum is 44.

The spelling of 55509305138 in words is "fifty-five billion, five hundred nine million, three hundred five thousand, one hundred thirty-eight".