61105560006 has 16 divisors (see below), whose sum is σ = 124811357184. Its totient is φ = 19935147144.

The previous prime is 61105559993. The next prime is 61105560011. The reversal of 61105560006 is 60006550116.

It is a congruent number.

It is an unprimeable number.

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, 108342910 + ... + 108343473.

It is an arithmetic number, because the mean of its divisors is an integer number (7800709824).

Almost surely, 2^61105560006 is an apocalyptic number.

61105560006 is an abundant number, since it is smaller than the sum of its proper divisors (63705797178).

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

61105560006 is a wasteful number, since it uses less digits than its factorization.

61105560006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216686435.

The product of its (nonzero) digits is 5400, while the sum is 30.

It can be divided in two parts, 611055 and 60006, that added together give a triangular number (671061 = T₁₁₅₈).

The spelling of 61105560006 in words is "sixty-one billion, one hundred five million, five hundred sixty thousand, six".