55083384720 has 640 divisors, whose sum is σ = 236864839680. Its totient is φ = 11455395840.

The previous prime is 55083384661. The next prime is 55083384737. The reversal of 55083384720 is 2748338055.

55083384720 is a `hidden beast` number, since 550 + 8 + 3 + 38 + 47 + 20 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13953787 + ... + 13957733.

It is an arithmetic number, because the mean of its divisors is an integer number (370101312).

Almost surely, 2^55083384720 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 55083384720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118432419840).

55083384720 is an abundant number, since it is smaller than the sum of its proper divisors (181781454960).

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

55083384720 is a wasteful number, since it uses less digits than its factorization.

55083384720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4060 (or 4048 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 55083384720 in words is "fifty-five billion, eighty-three million, three hundred eighty-four thousand, seven hundred twenty".