61404331332216 has 128 divisors (see below), whose sum is σ = 158205969331200. Its totient is φ = 19850123489280.

The previous prime is 61404331332143. The next prime is 61404331332229. The reversal of 61404331332216 is 61223313340416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 500744751 + ... + 500867361.

It is an arithmetic number, because the mean of its divisors is an integer number (1235984135400).

Almost surely, 2^{61404331332216} 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 61404331332216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79102984665600).

61404331332216 is an abundant number, since it is smaller than the sum of its proper divisors (96801637998984).

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

61404331332216 is a wasteful number, since it uses less digits than its factorization.

61404331332216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126709 (or 126705 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 39.

The spelling of 61404331332216 in words is "sixty-one trillion, four hundred four billion, three hundred thirty-one million, three hundred thirty-two thousand, two hundred sixteen".