55563909120 has 384 divisors, whose sum is σ = 200290708800. Its totient is φ = 14608760832.

The previous prime is 55563909043. The next prime is 55563909179. The reversal of 55563909120 is 2190936555.

55563909120 is a `hidden beast` number, since 5 + 5 + 5 + 639 + 0 + 9 + 1 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

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 31 ways as a sum of consecutive naturals, for example, 20181664 + ... + 20184416.

Almost surely, 2^55563909120 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 55563909120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100145354400).

55563909120 is an abundant number, since it is smaller than the sum of its proper divisors (144726799680).

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

55563909120 is a wasteful number, since it uses less digits than its factorization.

55563909120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2862 (or 2836 counting only the distinct ones).

The product of its (nonzero) digits is 364500, while the sum is 45.

The spelling of 55563909120 in words is "fifty-five billion, five hundred sixty-three million, nine hundred nine thousand, one hundred twenty".