55512606820 has 192 divisors, whose sum is σ = 138848193792. Its totient is φ = 18413568000.

The previous prime is 55512606761. The next prime is 55512606833. The reversal of 55512606820 is 2860621555.

55512606820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24993310 + ... + 24995530.

It is an arithmetic number, because the mean of its divisors is an integer number (723167676).

Almost surely, 2^55512606820 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 55512606820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69424096896).

55512606820 is an abundant number, since it is smaller than the sum of its proper divisors (83335586972).

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

55512606820 is a wasteful number, since it uses less digits than its factorization.

55512606820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2462 (or 2460 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 40.

The spelling of 55512606820 in words is "fifty-five billion, five hundred twelve million, six hundred six thousand, eight hundred twenty".