55500451344 has 480 divisors, whose sum is σ = 185890602240. Its totient is φ = 15705501696.

The previous prime is 55500451339. The next prime is 55500451351. The reversal of 55500451344 is 44315400555.

55500451344 is a `hidden beast` number, since 55 + 50 + 0 + 4 + 513 + 44 = 666.

It is a super-2 number, since 2×55500451344² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 55500451299 and 55500451308.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 332337949 + ... + 332338115.

It is an arithmetic number, because the mean of its divisors is an integer number (387272088).

Almost surely, 2^55500451344 is an apocalyptic number.

55500451344 is a gapful number since it is divisible by the number (54) 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 55500451344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92945301120).

55500451344 is an abundant number, since it is smaller than the sum of its proper divisors (130390150896).

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

55500451344 is a wasteful number, since it uses less digits than its factorization.

55500451344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

Adding to 55500451344 its reverse (44315400555), we get a palindrome (99815851899).

The spelling of 55500451344 in words is "fifty-five billion, five hundred million, four hundred fifty-one thousand, three hundred forty-four".