611061110561 has 16 divisors (see below), whose sum is σ = 676739847168. Its totient is φ = 547074699600.

The previous prime is 611061110521. The next prime is 611061110563. The reversal of 611061110561 is 165011160116.

It is a happy number.

It is not a de Polignac number, because 611061110561 - 2¹⁸ = 611060848417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (611061110563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2739716 + ... + 2954346.

It is an arithmetic number, because the mean of its divisors is an integer number (42296240448).

Almost surely, 2^611061110561 is an apocalyptic number.

It is an amenable number.

611061110561 is a deficient number, since it is larger than the sum of its proper divisors (65678736607).

611061110561 is a wasteful number, since it uses less digits than its factorization.

611061110561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218572.

The product of its (nonzero) digits is 1080, while the sum is 29.

Adding to 611061110561 its reverse (165011160116), we get a palindrome (776072270677).

The spelling of 611061110561 in words is "six hundred eleven billion, sixty-one million, one hundred ten thousand, five hundred sixty-one".