611606213061 has 4 divisors (see below), whose sum is σ = 815474950752. Its totient is φ = 407737475372.

The previous prime is 611606213039. The next prime is 611606213117. The reversal of 611606213061 is 160312606116.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 611606213061 - 2⁹ = 611606212549 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611606213461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101934368841 + ... + 101934368846.

It is an arithmetic number, because the mean of its divisors is an integer number (203868737688).

Almost surely, 2^611606213061 is an apocalyptic number.

It is an amenable number.

611606213061 is a deficient number, since it is larger than the sum of its proper divisors (203868737691).

611606213061 is a wasteful number, since it uses less digits than its factorization.

611606213061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203868737690.

The product of its (nonzero) digits is 7776, while the sum is 33.

Adding to 611606213061 its reverse (160312606116), we get a palindrome (771918819177).

The spelling of 611606213061 in words is "six hundred eleven billion, six hundred six million, two hundred thirteen thousand, sixty-one".