12540104432203 has 4 divisors (see below), whose sum is σ = 12944623930048. Its totient is φ = 12135584934360.

The previous prime is 12540104432201. The next prime is 12540104432209. The reversal of 12540104432203 is 30223440104521.

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

It is a cyclic number.

It is not a de Polignac number, because 12540104432203 - 2¹ = 12540104432201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 404519497813 = 12540104432203 / (1 + 2 + 5 + 4 + 0 + 1 + 0 + 4 + 4 + 3 + 2 + 2 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12540104432201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202259748876 + ... + 202259748937.

It is an arithmetic number, because the mean of its divisors is an integer number (3236155982512).

Almost surely, 2^{12540104432203} is an apocalyptic number.

12540104432203 is a deficient number, since it is larger than the sum of its proper divisors (404519497845).

12540104432203 is an equidigital number, since it uses as much as digits as its factorization.

12540104432203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404519497844.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 12540104432203 its reverse (30223440104521), we get a palindrome (42763544536724).

The spelling of 12540104432203 in words is "twelve trillion, five hundred forty billion, one hundred four million, four hundred thirty-two thousand, two hundred three".