12551361623 has 8 divisors (see below), whose sum is σ = 12987179520. Its totient is φ = 12117477240.

The previous prime is 12551361619. The next prime is 12551361643. The reversal of 12551361623 is 32616315521.

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

It is a cyclic number.

It is not a de Polignac number, because 12551361623 - 2² = 12551361619 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 (12551361643) 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, 470165 + ... + 496142.

It is an arithmetic number, because the mean of its divisors is an integer number (1623397440).

Almost surely, 2^12551361623 is an apocalyptic number.

12551361623 is a deficient number, since it is larger than the sum of its proper divisors (435817897).

12551361623 is an equidigital number, since it uses as much as digits as its factorization.

12551361623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966757.

The product of its digits is 32400, while the sum is 35.

The spelling of 12551361623 in words is "twelve billion, five hundred fifty-one million, three hundred sixty-one thousand, six hundred twenty-three".