5555329920 has 576 divisors, whose sum is σ = 23173441200. Its totient is φ = 1269789696.

The previous prime is 5555329907. The next prime is 5555329943. The reversal of 5555329920 is 299235555.

5555329920 is a `hidden beast` number, since 5 + 5 + 5 + 532 + 99 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

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 71 ways as a sum of consecutive naturals, for example, 793618557 + ... + 793618563.

Almost surely, 2^5555329920 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 5555329920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11586720600).

5555329920 is an abundant number, since it is smaller than the sum of its proper divisors (17618111280).

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

5555329920 is an frugal number, since it uses more digits than its factorization.

5555329920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 607500, while the sum is 45.

The square root of 5555329920 is about 74534.0856253030. The cubic root of 5555329920 is about 1771.0736376241.

The spelling of 5555329920 in words is "five billion, five hundred fifty-five million, three hundred twenty-nine thousand, nine hundred twenty".