12551372063 has 4 divisors (see below), whose sum is σ = 12621491640. Its totient is φ = 12481252488.

The previous prime is 12551372059. The next prime is 12551372069. The reversal of 12551372063 is 36027315521.

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 12551372063 - 2² = 12551372059 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 (12551372069) 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, 35059520 + ... + 35059877.

It is an arithmetic number, because the mean of its divisors is an integer number (3155372910).

Almost surely, 2^12551372063 is an apocalyptic number.

12551372063 is a deficient number, since it is larger than the sum of its proper divisors (70119577).

12551372063 is an equidigital number, since it uses as much as digits as its factorization.

12551372063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70119576.

The product of its (nonzero) digits is 37800, while the sum is 35.

Adding to 12551372063 its reverse (36027315521), we get a palindrome (48578687584).

The spelling of 12551372063 in words is "twelve billion, five hundred fifty-one million, three hundred seventy-two thousand, sixty-three".