55530380358 has 64 divisors (see below), whose sum is σ = 127747468800. Its totient is φ = 17859048480.

The previous prime is 55530380317. The next prime is 55530380359. The reversal of 55530380358 is 85308303555.

55530380358 is a `hidden beast` number, since 5 + 5 + 530 + 3 + 80 + 35 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55530380359) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2310423 + ... + 2334333.

It is an arithmetic number, because the mean of its divisors is an integer number (1996054200).

Almost surely, 2^55530380358 is an apocalyptic number.

55530380358 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55530380358, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63873734400).

55530380358 is an abundant number, since it is smaller than the sum of its proper divisors (72217088442).

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

55530380358 is a wasteful number, since it uses less digits than its factorization.

55530380358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25434 (or 25428 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 45.

The spelling of 55530380358 in words is "fifty-five billion, five hundred thirty million, three hundred eighty thousand, three hundred fifty-eight".