16661140651060 has 48 divisors (see below), whose sum is σ = 35382453659280. Its totient is φ = 6589401477120.

The previous prime is 16661140651003. The next prime is 16661140651063. The reversal of 16661140651060 is 6015604116661.

It can be written as a sum of positive squares in 8 ways, for example, as 1678636366884 + 14982504284176 = 1295622^2 + 3870724^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16661140650998 and 16661140651016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16661140651063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83590720 + ... + 83789800.

It is an arithmetic number, because the mean of its divisors is an integer number (737134451235).

Almost surely, 2^{16661140651060} is an apocalyptic number.

16661140651060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16661140651060 is an abundant number, since it is smaller than the sum of its proper divisors (18721313008220).

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

16661140651060 is a wasteful number, since it uses less digits than its factorization.

16661140651060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246196 (or 246194 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 16661140651060 in words is "sixteen trillion, six hundred sixty-one billion, one hundred forty million, six hundred fifty-one thousand, sixty".