55389129338 has 4 divisors (see below), whose sum is σ = 83083694010. Its totient is φ = 27694564668.

The previous prime is 55389129337. The next prime is 55389129347. The reversal of 55389129338 is 83392198355.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 49708040209 + 5681089129 = 222953^2 + 75373^2 .

It is not an unprimeable number, because it can be changed into a prime (55389129331) by changing a digit.

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 as a sum of consecutive naturals, namely, 13847282333 + ... + 13847282336.

Almost surely, 2^55389129338 is an apocalyptic number.

55389129338 is a deficient number, since it is larger than the sum of its proper divisors (27694564672).

55389129338 is a wasteful number, since it uses less digits than its factorization.

55389129338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27694564671.

The product of its digits is 6998400, while the sum is 56.

The spelling of 55389129338 in words is "fifty-five billion, three hundred eighty-nine million, one hundred twenty-nine thousand, three hundred thirty-eight".