611231543461 has 32 divisors (see below), whose sum is σ = 764046489600. Its totient is φ = 475041153600.

The previous prime is 611231543401. The next prime is 611231543501. The reversal of 611231543461 is 164345132116.

It is a cyclic number.

It is not a de Polignac number, because 611231543461 - 2⁹ = 611231542949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 611231543461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611231543401) 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 31 ways as a sum of consecutive naturals, for example, 54004375 + ... + 54015691.

It is an arithmetic number, because the mean of its divisors is an integer number (23876452800).

Almost surely, 2^611231543461 is an apocalyptic number.

It is an amenable number.

611231543461 is a deficient number, since it is larger than the sum of its proper divisors (152814946139).

611231543461 is a wasteful number, since it uses less digits than its factorization.

611231543461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13105.

The product of its digits is 51840, while the sum is 37.

Adding to 611231543461 its reverse (164345132116), we get a palindrome (775576675577).

The spelling of 611231543461 in words is "six hundred eleven billion, two hundred thirty-one million, five hundred forty-three thousand, four hundred sixty-one".