5521784043855 has 16 divisors (see below), whose sum is σ = 8847640093824. Its totient is φ = 2940689615520.

The previous prime is 5521784043833. The next prime is 5521784043857. The reversal of 5521784043855 is 5583404871255.

It is not a de Polignac number, because 5521784043855 - 2¹⁴ = 5521784027471 is a prime.

It is a super-2 number, since 2×5521784043855² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5521784043795 and 5521784043804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5521784043857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266356449 + ... + 266377178.

It is an arithmetic number, because the mean of its divisors is an integer number (552977505864).

Almost surely, 2^{5521784043855} is an apocalyptic number.

5521784043855 is a deficient number, since it is larger than the sum of its proper divisors (3325856049969).

5521784043855 is a wasteful number, since it uses less digits than its factorization.

5521784043855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532734326.

The product of its (nonzero) digits is 26880000, while the sum is 57.

The spelling of 5521784043855 in words is "five trillion, five hundred twenty-one billion, seven hundred eighty-four million, forty-three thousand, eight hundred fifty-five".