1543222402400 has 288 divisors, whose sum is σ = 4548848855040. Its totient is φ = 499987998720.

The previous prime is 1543222402399. The next prime is 1543222402417. The reversal of 1543222402400 is 42042223451.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7531709 + ... + 7733891.

It is an arithmetic number, because the mean of its divisors is an integer number (15794614080).

Almost surely, 2^{1543222402400} is an apocalyptic number.

1543222402400 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 1543222402400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2274424427520).

1543222402400 is an abundant number, since it is smaller than the sum of its proper divisors (3005626452640).

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

1543222402400 is a wasteful number, since it uses less digits than its factorization.

1543222402400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202286 (or 202273 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 1543222402400 its reverse (42042223451), we get a palindrome (1585264625851).

The spelling of 1543222402400 in words is "one trillion, five hundred forty-three billion, two hundred twenty-two million, four hundred two thousand, four hundred".