6111055561005 has 24 divisors (see below), whose sum is σ = 10766143791000. Its totient is φ = 3205799637120.

The previous prime is 6111055561003. The next prime is 6111055561057. The reversal of 6111055561005 is 5001655501116.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 638571997449 + 5472483563556 = 799107^2 + 2339334^2 .

It is not a de Polignac number, because 6111055561005 - 2¹ = 6111055561003 is a prime.

It is a super-2 number, since 2×6111055561005² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6111055561001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1113122130 + ... + 1113127619.

It is an arithmetic number, because the mean of its divisors is an integer number (448589324625).

Almost surely, 2^{6111055561005} is an apocalyptic number.

It is an amenable number.

6111055561005 is a deficient number, since it is larger than the sum of its proper divisors (4655088229995).

6111055561005 is a wasteful number, since it uses less digits than its factorization.

6111055561005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226249821 (or 2226249818 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 6111055561005 in words is "six trillion, one hundred eleven billion, fifty-five million, five hundred sixty-one thousand, five".