55511060550020 has 48 divisors (see below), whose sum is σ = 121658485818240. Its totient is φ = 21236071101696.

The previous prime is 55511060549999. The next prime is 55511060550137. The reversal of 55511060550020 is 2005506011555.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5037497 + ... + 11678976.

It is an arithmetic number, because the mean of its divisors is an integer number (2534551787880).

Almost surely, 2^{55511060550020} is an apocalyptic number.

It is an amenable number.

55511060550020 is an abundant number, since it is smaller than the sum of its proper divisors (66147425268220).

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

55511060550020 is a wasteful number, since it uses less digits than its factorization.

55511060550020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16723724 (or 16723722 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 35.

Adding to 55511060550020 its reverse (2005506011555), we get a palindrome (57516566561575).

The spelling of 55511060550020 in words is "fifty-five trillion, five hundred eleven billion, sixty million, five hundred fifty thousand, twenty".