12540243037 has 8 divisors (see below), whose sum is σ = 14665002176. Its totient is φ = 10498807872.

The previous prime is 12540243013. The next prime is 12540243041. The reversal of 12540243037 is 73034204521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12540243037 - 2⁷ = 12540242909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12540243047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20830668 + ... + 20831269.

It is an arithmetic number, because the mean of its divisors is an integer number (1833125272).

Almost surely, 2^12540243037 is an apocalyptic number.

It is an amenable number.

12540243037 is a deficient number, since it is larger than the sum of its proper divisors (2124759139).

12540243037 is an equidigital number, since it uses as much as digits as its factorization.

12540243037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41661987.

The product of its (nonzero) digits is 20160, while the sum is 31.

Adding to 12540243037 its reverse (73034204521), we get a palindrome (85574447558).

The spelling of 12540243037 in words is "twelve billion, five hundred forty million, two hundred forty-three thousand, thirty-seven".