12651240000001 has 4 divisors (see below), whose sum is σ = 12651895490004. Its totient is φ = 12650584510000.

The previous prime is 12651239999939. The next prime is 12651240000031. The reversal of 12651240000001 is 10000004215621.

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 6652267481601 + 5998972518400 = 2579199^2 + 2449280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12651240000001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12651240000031) 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, 327716050 + ... + 327754651.

It is an arithmetic number, because the mean of its divisors is an integer number (3162973872501).

Almost surely, 2^{12651240000001} is an apocalyptic number.

It is an amenable number.

12651240000001 is a deficient number, since it is larger than the sum of its proper divisors (655490003).

12651240000001 is an equidigital number, since it uses as much as digits as its factorization.

12651240000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655490002.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 12651240000001 its reverse (10000004215621), we get a palindrome (22651244215622).

The spelling of 12651240000001 in words is "twelve trillion, six hundred fifty-one billion, two hundred forty million, one", and thus it is an aban number.