55099384722 has 54 divisors (see below), whose sum is σ = 121505129109. Its totient is φ = 18045454320.

The previous prime is 55099384699. The next prime is 55099384727. The reversal of 55099384722 is 22748399055.

55099384722 is a `hidden beast` number, since 5 + 50 + 99 + 38 + 472 + 2 = 666.

55099384722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 37322762481 + 17776622241 = 193191^2 + 133329^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=165981.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (55099384727) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 60748593 + ... + 60749499.

Almost surely, 2^55099384722 is an apocalyptic number.

55099384722 is an abundant number, since it is smaller than the sum of its proper divisors (66405744387).

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

55099384722 is an frugal number, since it uses more digits than its factorization.

55099384722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944 (or 973 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 55099384722 in words is "fifty-five billion, ninety-nine million, three hundred eighty-four thousand, seven hundred twenty-two".