55509595499 has 4 divisors (see below), whose sum is σ = 55512350664. Its totient is φ = 55506840336.

The previous prime is 55509595489. The next prime is 55509595511. The reversal of 55509595499 is 99459590555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55509595499 - 2⁸ = 55509595243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55509595439) 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, 1347137 + ... + 1387730.

It is an arithmetic number, because the mean of its divisors is an integer number (13878087666).

Almost surely, 2^55509595499 is an apocalyptic number.

55509595499 is a deficient number, since it is larger than the sum of its proper divisors (2755165).

55509595499 is a wasteful number, since it uses less digits than its factorization.

55509595499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755164.

The product of its (nonzero) digits is 82012500, while the sum is 65.

The spelling of 55509595499 in words is "fifty-five billion, five hundred nine million, five hundred ninety-five thousand, four hundred ninety-nine".