1543268158656 has 168 divisors, whose sum is σ = 4759337882880. Its totient is φ = 440055802368.

The previous prime is 1543268158633. The next prime is 1543268158681. The reversal of 1543268158656 is 6568518623451.

It is a tau number, because it is divible by the number of its divisors (168).

It is a self number, because there is not a number n which added to its sum of digits gives 1543268158656.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4569165 + ... + 4895283.

It is an arithmetic number, because the mean of its divisors is an integer number (28329392160).

Almost surely, 2^{1543268158656} is an apocalyptic number.

1543268158656 is a gapful number since it is divisible by the number (16) 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 1543268158656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2379668941440).

1543268158656 is an abundant number, since it is smaller than the sum of its proper divisors (3216069724224).

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

1543268158656 is a wasteful number, since it uses less digits than its factorization.

1543268158656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326651 (or 326634 counting only the distinct ones).

The product of its digits is 41472000, while the sum is 60.

The spelling of 1543268158656 in words is "one trillion, five hundred forty-three billion, two hundred sixty-eight million, one hundred fifty-eight thousand, six hundred fifty-six".