55606506516 has 144 divisors (see below), whose sum is σ = 154841057280. Its totient is φ = 16685948160.

The previous prime is 55606506509. The next prime is 55606506517. The reversal of 55606506516 is 61560560655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55606506517) 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 47 ways as a sum of consecutive naturals, for example, 50140570 + ... + 50141678.

It is an arithmetic number, because the mean of its divisors is an integer number (1075285120).

Almost surely, 2^55606506516 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 55606506516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77420528640).

55606506516 is an abundant number, since it is smaller than the sum of its proper divisors (99234550764).

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

55606506516 is a wasteful number, since it uses less digits than its factorization.

55606506516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2254 (or 2249 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 55606506516 in words is "fifty-five billion, six hundred six million, five hundred six thousand, five hundred sixteen".