55555828650 has 144 divisors (see below), whose sum is σ = 170667701568. Its totient is φ = 12692160000.

The previous prime is 55555828621. The next prime is 55555828661. The reversal of 55555828650 is 5682855555.

55555828650 is a `hidden beast` number, since 5 + 5 + 5 + 5 + 582 + 8 + 6 + 50 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9828325 + ... + 9833975.

It is an arithmetic number, because the mean of its divisors is an integer number (1185192372).

Almost surely, 2^55555828650 is an apocalyptic number.

55555828650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55555828650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85333850784).

55555828650 is an abundant number, since it is smaller than the sum of its proper divisors (115111872918).

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

55555828650 is a wasteful number, since it uses less digits than its factorization.

55555828650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8797 (or 8789 counting only the distinct ones).

The product of its (nonzero) digits is 12000000, while the sum is 54.

The spelling of 55555828650 in words is "fifty-five billion, five hundred fifty-five million, eight hundred twenty-eight thousand, six hundred fifty".