55028447784460 has 96 divisors (see below), whose sum is σ = 121502213360640. Its totient is φ = 20894460711168.

The previous prime is 55028447784451. The next prime is 55028447784487. The reversal of 55028447784460 is 6448774482055.

It is a junction number, because it is equal to n+sod(n) for n = 55028447784392 and 55028447784401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46972962 + ... + 48130198.

It is an arithmetic number, because the mean of its divisors is an integer number (1265648055840).

Almost surely, 2^{55028447784460} 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 55028447784460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60751106680320).

55028447784460 is an abundant number, since it is smaller than the sum of its proper divisors (66473765576180).

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

55028447784460 is a wasteful number, since it uses less digits than its factorization.

55028447784460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158055 (or 1158053 counting only the distinct ones).

The product of its (nonzero) digits is 240844800, while the sum is 64.

The spelling of 55028447784460 in words is "fifty-five trillion, twenty-eight billion, four hundred forty-seven million, seven hundred eighty-four thousand, four hundred sixty".