55129581169208 has 128 divisors (see below), whose sum is σ = 127324673280000. Its totient is φ = 21791931033600.

The previous prime is 55129581169207. The next prime is 55129581169277. The reversal of 55129581169208 is 80296118592155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55129581169207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5992992593 + ... + 5993001791.

It is an arithmetic number, because the mean of its divisors is an integer number (994724010000).

Almost surely, 2^{55129581169208} is an apocalyptic number.

It is an amenable number.

55129581169208 is an abundant number, since it is smaller than the sum of its proper divisors (72195092110792).

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

55129581169208 is a wasteful number, since it uses less digits than its factorization.

55129581169208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14965 (or 14961 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 62.

The spelling of 55129581169208 in words is "fifty-five trillion, one hundred twenty-nine billion, five hundred eighty-one million, one hundred sixty-nine thousand, two hundred eight".