55509725789 has 8 divisors (see below), whose sum is σ = 63560990400. Its totient is φ = 47488787136.

The previous prime is 55509725767. The next prime is 55509725863. The reversal of 55509725789 is 98752790555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-55509725789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55509725729) 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 7 ways as a sum of consecutive naturals, for example, 7577564 + ... + 7584885.

It is an arithmetic number, because the mean of its divisors is an integer number (7945123800).

Almost surely, 2^55509725789 is an apocalyptic number.

It is an amenable number.

55509725789 is a deficient number, since it is larger than the sum of its proper divisors (8051264611).

55509725789 is a wasteful number, since it uses less digits than its factorization.

55509725789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15162979.

The product of its (nonzero) digits is 39690000, while the sum is 62.

The spelling of 55509725789 in words is "fifty-five billion, five hundred nine million, seven hundred twenty-five thousand, seven hundred eighty-nine".