16145631463312 has 120 divisors (see below), whose sum is σ = 35521672170600. Its totient is φ = 7096307871744.

The previous prime is 16145631463303. The next prime is 16145631463319. The reversal of 16145631463312 is 21336413654161.

It can be written as a sum of positive squares in 12 ways, for example, as 2650852884736 + 13494778578576 = 1628144^2 + 3673524^2 .

It is not an unprimeable number, because it can be changed into a prime (16145631463319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4314114 + ... + 7134622.

It is an arithmetic number, because the mean of its divisors is an integer number (296013934755).

Almost surely, 2^{16145631463312} 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 16145631463312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17760836085300).

16145631463312 is an abundant number, since it is smaller than the sum of its proper divisors (19376040707288).

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

16145631463312 is a wasteful number, since it uses less digits than its factorization.

16145631463312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820645 (or 2820626 counting only the distinct ones).

The product of its digits is 933120, while the sum is 46.

The spelling of 16145631463312 in words is "sixteen trillion, one hundred forty-five billion, six hundred thirty-one million, four hundred sixty-three thousand, three hundred twelve".