55243442442 has 16 divisors (see below), whose sum is σ = 110490134112. Its totient is φ = 18413939280.

The previous prime is 55243442389. The next prime is 55243442467. The reversal of 55243442442 is 24424434255.

It is a self number, because there is not a number n which added to its sum of digits gives 55243442442.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123817 + ... + 354707.

It is an arithmetic number, because the mean of its divisors is an integer number (6905633382).

Almost surely, 2^55243442442 is an apocalyptic number.

55243442442 is an abundant number, since it is smaller than the sum of its proper divisors (55246691670).

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

55243442442 is a wasteful number, since it uses less digits than its factorization.

55243442442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270773.

The product of its digits is 614400, while the sum is 39.

Adding to 55243442442 its reverse (24424434255), we get a palindrome (79667876697).

The spelling of 55243442442 in words is "fifty-five billion, two hundred forty-three million, four hundred forty-two thousand, four hundred forty-two".