611231646611 has 4 divisors (see below), whose sum is σ = 611830307424. Its totient is φ = 610632985800.

The previous prime is 611231646583. The next prime is 611231646617. The reversal of 611231646611 is 116646132116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 611231646611 - 2²⁶ = 611164537747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611231646617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299328875 + ... + 299330916.

It is an arithmetic number, because the mean of its divisors is an integer number (152957576856).

Almost surely, 2^611231646611 is an apocalyptic number.

611231646611 is a deficient number, since it is larger than the sum of its proper divisors (598660813).

611231646611 is a wasteful number, since it uses less digits than its factorization.

611231646611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598660812.

The product of its digits is 31104, while the sum is 38.

Adding to 611231646611 its reverse (116646132116), we get a palindrome (727877778727).

The spelling of 611231646611 in words is "six hundred eleven billion, two hundred thirty-one million, six hundred forty-six thousand, six hundred eleven".