55656675040 has 144 divisors (see below), whose sum is σ = 135239706000. Its totient is φ = 21644722176.

The previous prime is 55656675031. The next prime is 55656675079. The reversal of 55656675040 is 4057665655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123956736 + ... + 123957184.

It is an arithmetic number, because the mean of its divisors is an integer number (939164625).

Almost surely, 2^55656675040 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 55656675040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67619853000).

55656675040 is an abundant number, since it is smaller than the sum of its proper divisors (79583030960).

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

55656675040 is a wasteful number, since it uses less digits than its factorization.

55656675040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969 (or 918 counting only the distinct ones).

The product of its (nonzero) digits is 3780000, while the sum is 49.

The spelling of 55656675040 in words is "fifty-five billion, six hundred fifty-six million, six hundred seventy-five thousand, forty".