2143539587728 has 240 divisors, whose sum is σ = 5600636607744. Its totient is φ = 783166648320.

The previous prime is 2143539587689. The next prime is 2143539587729. The reversal of 2143539587728 is 8277859353412.

It is a self number, because there is not a number n which added to its sum of digits gives 2143539587728.

It is not an unprimeable number, because it can be changed into a prime (2143539587729) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40584025 + ... + 40636807.

Almost surely, 2^{2143539587728} is an apocalyptic number.

2143539587728 is a gapful number since it is divisible by the number (28) 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 2143539587728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2800318303872).

2143539587728 is an abundant number, since it is smaller than the sum of its proper divisors (3457097020016).

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

2143539587728 is a wasteful number, since it uses less digits than its factorization.

2143539587728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53110 (or 53097 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 64.

The spelling of 2143539587728 in words is "two trillion, one hundred forty-three billion, five hundred thirty-nine million, five hundred eighty-seven thousand, seven hundred twenty-eight".