61105560010550 has 24 divisors (see below), whose sum is σ = 123988736313432. Its totient is φ = 22220203640000.

The previous prime is 61105560010511. The next prime is 61105560010589. The reversal of 61105560010550 is 5501006550116.

It is an interprime number because it is at equal distance from previous prime (61105560010511) and next prime (61105560010589).

It is a super-2 number, since 2×61105560010550² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61105560010550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55550508551 + ... + 55550509650.

It is an arithmetic number, because the mean of its divisors is an integer number (5166197346393).

Almost surely, 2^{61105560010550} is an apocalyptic number.

61105560010550 is an abundant number, since it is smaller than the sum of its proper divisors (62883176302882).

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

61105560010550 is a wasteful number, since it uses less digits than its factorization.

61105560010550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111101018224 (or 111101018219 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 35.

Adding to 61105560010550 its reverse (5501006550116), we get a palindrome (66606566560666).

The spelling of 61105560010550 in words is "sixty-one trillion, one hundred five billion, five hundred sixty million, ten thousand, five hundred fifty".