1543500013201 has 4 divisors (see below), whose sum is σ = 1585216229812. Its totient is φ = 1501783796592.

The previous prime is 1543500013177. The next prime is 1543500013241. The reversal of 1543500013201 is 1023100053451.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1199254961025 + 344245052176 = 1095105^2 + 586724^2 .

It is a cyclic number.

It is not a de Polignac number, because 1543500013201 - 2⁵ = 1543500013169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1543500013241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20858108250 + ... + 20858108323.

It is an arithmetic number, because the mean of its divisors is an integer number (396304057453).

Almost surely, 2^{1543500013201} is an apocalyptic number.

It is an amenable number.

1543500013201 is a deficient number, since it is larger than the sum of its proper divisors (41716216611).

1543500013201 is an equidigital number, since it uses as much as digits as its factorization.

1543500013201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41716216610.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 1543500013201 its reverse (1023100053451), we get a palindrome (2566600066652).

The spelling of 1543500013201 in words is "one trillion, five hundred forty-three billion, five hundred million, thirteen thousand, two hundred one".