61111105060 has 24 divisors (see below), whose sum is σ = 129510695160. Its totient is φ = 24220180224.

The previous prime is 61111104991. The next prime is 61111105063. The reversal of 61111105060 is 6050111116.

It can be written as a sum of positive squares in 4 ways, for example, as 5578297344 + 55532807716 = 74688^2 + 235654^2 .

It is not an unprimeable number, because it can be changed into a prime (61111105063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14014129 + ... + 14018488.

It is an arithmetic number, because the mean of its divisors is an integer number (5396278965).

Almost surely, 2^61111105060 is an apocalyptic number.

It is an amenable number.

61111105060 is an abundant number, since it is smaller than the sum of its proper divisors (68399590100).

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

61111105060 is a wasteful number, since it uses less digits than its factorization.

61111105060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28032735 (or 28032733 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 22.

Adding to 61111105060 its reverse (6050111116), we get a palindrome (67161216176).

The spelling of 61111105060 in words is "sixty-one billion, one hundred eleven million, one hundred five thousand, sixty".