55205115320511 has 48 divisors (see below), whose sum is σ = 87713767430016. Its totient is φ = 33245003570688.

The previous prime is 55205115320477. The next prime is 55205115320519. The reversal of 55205115320511 is 11502351150255.

55205115320511 is a `hidden beast` number, since 5 + 5 + 2 + 0 + 5 + 115 + 3 + 20 + 511 = 666.

It is not a de Polignac number, because 55205115320511 - 2²⁶ = 55205048211647 is a prime.

It is a super-2 number, since 2×55205115320511² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55205115320519) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39639651 + ... + 41008683.

It is an arithmetic number, because the mean of its divisors is an integer number (1827370154792).

Almost surely, 2^{55205115320511} is an apocalyptic number.

55205115320511 is a deficient number, since it is larger than the sum of its proper divisors (32508652109505).

55205115320511 is a wasteful number, since it uses less digits than its factorization.

55205115320511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376432 (or 1376429 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 36.

Adding to 55205115320511 its reverse (11502351150255), we get a palindrome (66707466470766).

The spelling of 55205115320511 in words is "fifty-five trillion, two hundred five billion, one hundred fifteen million, three hundred twenty thousand, five hundred eleven".