61110500000 has 336 divisors, whose sum is σ = 168680340864.
Its totient is φ = 21600000000.
The previous prime is 61110499991. The next prime is 61110500021. The reversal of 61110500000 is 501116.
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 55 ways as a sum of consecutive naturals, for example, 225499865 + ... + 225500135.
It is an arithmetic number, because the mean of its divisors is an integer number (502024824).
Almost surely, 261110500000 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 61110500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84340170432).
61110500000 is an abundant number, since it is smaller than the sum of its proper divisors (107569840864).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
61110500000 is an equidigital number, since it uses as much as digits as its factorization.
61110500000 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 363 (or 330 counting only the distinct ones).
The product of its (nonzero) digits is 30, while the sum is 14.
The spelling of 61110500000 in words is "sixty-one billion, one hundred ten million, five hundred thousand".