55609919592 has 64 divisors (see below), whose sum is σ = 142391208960. Its totient is φ = 18088593600.

The previous prime is 55609919591. The next prime is 55609919609. The reversal of 55609919592 is 29591990655.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55609919591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1101217 + ... + 1150607.

It is an arithmetic number, because the mean of its divisors is an integer number (2224862640).

Almost surely, 2^55609919592 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55609919592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71195604480).

55609919592 is an abundant number, since it is smaller than the sum of its proper divisors (86781289368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55609919592 is a wasteful number, since it uses less digits than its factorization.

55609919592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50534 (or 50530 counting only the distinct ones).

The product of its (nonzero) digits is 9841500, while the sum is 60.

The spelling of 55609919592 in words is "fifty-five billion, six hundred nine million, nine hundred nineteen thousand, five hundred ninety-two".