55047842816 has 44 divisors (see below), whose sum is σ = 110317169640. Its totient is φ = 27455078400.

The previous prime is 55047842809. The next prime is 55047842819. The reversal of 55047842816 is 61824874055.

It is not an unprimeable number, because it can be changed into a prime (55047842819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343595 + ... + 477653.

Almost surely, 2^55047842816 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 55047842816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55158584820).

55047842816 is an abundant number, since it is smaller than the sum of its proper divisors (55269326824).

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

55047842816 is a wasteful number, since it uses less digits than its factorization.

55047842816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134480 (or 134462 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 50.

The spelling of 55047842816 in words is "fifty-five billion, forty-seven million, eight hundred forty-two thousand, eight hundred sixteen".