61105597216 has 96 divisors (see below), whose sum is σ = 128741659200. Its totient is φ = 28466380800.

The previous prime is 61105597187. The next prime is 61105597253. The reversal of 61105597216 is 61279550116.

It is a super-2 number, since 2×61105597216² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10440691 + ... + 10446541.

It is an arithmetic number, because the mean of its divisors is an integer number (1341058950).

Almost surely, 2^61105597216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61105597216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64370829600).

61105597216 is an abundant number, since it is smaller than the sum of its proper divisors (67636061984).

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

61105597216 is a wasteful number, since it uses less digits than its factorization.

61105597216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6162 (or 6154 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 43.

The spelling of 61105597216 in words is "sixty-one billion, one hundred five million, five hundred ninety-seven thousand, two hundred sixteen".