1543638428512 has 96 divisors (see below), whose sum is σ = 3153456684000. Its totient is φ = 742927331328.

The previous prime is 1543638428491. The next prime is 1543638428537. The reversal of 1543638428512 is 2158248363451.

Its product of digits (5529600) is a multiple of the sum of its prime divisors (4320).

It is a self number, because there is not a number n which added to its sum of digits gives 1543638428512.

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 15 ways as a sum of consecutive naturals, for example, 605584614 + ... + 605587162.

It is an arithmetic number, because the mean of its divisors is an integer number (32848507125).

Almost surely, 2^{1543638428512} 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 1543638428512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1576728342000).

1543638428512 is an abundant number, since it is smaller than the sum of its proper divisors (1609818255488).

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

1543638428512 is a wasteful number, since it uses less digits than its factorization.

1543638428512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4328 (or 4320 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 52.

The spelling of 1543638428512 in words is "one trillion, five hundred forty-three billion, six hundred thirty-eight million, four hundred twenty-eight thousand, five hundred twelve".