55205142133442 has 16 divisors (see below), whose sum is σ = 94637549146560. Its totient is φ = 23659305970608.

The previous prime is 55205142133429. The next prime is 55205142133523. The reversal of 55205142133442 is 24433124150255.

It is a self number, because there is not a number n which added to its sum of digits gives 55205142133442.

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, 5933984 + ... + 12067412.

It is an arithmetic number, because the mean of its divisors is an integer number (5914846821660).

Almost surely, 2^{55205142133442} is an apocalyptic number.

55205142133442 is a deficient number, since it is larger than the sum of its proper divisors (39432407013118).

55205142133442 is a wasteful number, since it uses less digits than its factorization.

55205142133442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6776345.

The product of its (nonzero) digits is 576000, while the sum is 41.

Adding to 55205142133442 its reverse (24433124150255), we get a palindrome (79638266283697).

The spelling of 55205142133442 in words is "fifty-five trillion, two hundred five billion, one hundred forty-two million, one hundred thirty-three thousand, four hundred forty-two".