611111056005 has 16 divisors (see below), whose sum is σ = 1086419655360. Its totient is φ = 325925896464.

The previous prime is 611111055977. The next prime is 611111056007. The reversal of 611111056005 is 500650111116.

It is not a de Polignac number, because 611111056005 - 2⁸ = 611111055749 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 611111056005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611111056007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2263374147 + ... + 2263374416.

It is an arithmetic number, because the mean of its divisors is an integer number (67901228460).

Almost surely, 2^611111056005 is an apocalyptic number.

It is an amenable number.

611111056005 is a deficient number, since it is larger than the sum of its proper divisors (475308599355).

611111056005 is a wasteful number, since it uses less digits than its factorization.

611111056005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4526748577 (or 4526748571 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

The spelling of 611111056005 in words is "six hundred eleven billion, one hundred eleven million, fifty-six thousand, five".