61055111060 has 24 divisors (see below), whose sum is σ = 130317633096. Its totient is φ = 24021682560.

The previous prime is 61055111059. The next prime is 61055111063. The reversal of 61055111060 is 6011155016.

It can be written as a sum of positive squares in 4 ways, for example, as 25361296 + 61029749764 = 5036^2 + 247042^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61055111063) 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 7 ways as a sum of consecutive naturals, for example, 25021367 + ... + 25023806.

It is an arithmetic number, because the mean of its divisors is an integer number (5429901379).

Almost surely, 2^61055111060 is an apocalyptic number.

It is an amenable number.

61055111060 is an abundant number, since it is smaller than the sum of its proper divisors (69262522036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61055111060 is a wasteful number, since it uses less digits than its factorization.

61055111060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50045243 (or 50045241 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 26.

Adding to 61055111060 its reverse (6011155016), we get a palindrome (67066266076).

The spelling of 61055111060 in words is "sixty-one billion, fifty-five million, one hundred eleven thousand, sixty".