55649880000 has 1680 divisors, whose sum is σ = 249551318016. Its totient is φ = 11658240000.

The previous prime is 55649879921. The next prime is 55649880029. The reversal of 55649880000 is 8894655.

55649880000 is a `hidden beast` number, since 5 + 564 + 9 + 8 + 80 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 1184039977 + ... + 1184040023.

Almost surely, 2^55649880000 is an apocalyptic number.

55649880000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55649880000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124775659008).

55649880000 is an abundant number, since it is smaller than the sum of its proper divisors (193901438016).

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

55649880000 is a wasteful number, since it uses less digits than its factorization.

55649880000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 55649880000 in words is "fifty-five billion, six hundred forty-nine million, eight hundred eighty thousand".