15445043040000 has 720 divisors, whose sum is σ = 59903239827200. Its totient is φ = 3530257920000.

The previous prime is 15445043039953. The next prime is 15445043040041. The reversal of 15445043040000 is 4034054451.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 15445043040000.

It is a congruent number.

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 79 ways as a sum of consecutive naturals, for example, 164593095 + ... + 164686905.

Almost surely, 2^{15445043040000} is an apocalyptic number.

15445043040000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15445043040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29951619913600).

15445043040000 is an abundant number, since it is smaller than the sum of its proper divisors (44458196787200).

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

15445043040000 is an frugal number, since it uses more digits than its factorization.

15445043040000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93871 (or 93828 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 15445043040000 its reverse (4034054451), we get a palindrome (15449077094451).

The spelling of 15445043040000 in words is "fifteen trillion, four hundred forty-five billion, forty-three million, forty thousand".