12451318991 has 8 divisors (see below), whose sum is σ = 12739343040. Its totient is φ = 12165261472.

The previous prime is 12451318909. The next prime is 12451319009. The reversal of 12451318991 is 19981315421.

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 12451318991 - 2¹⁴ = 12451302607 is a prime.

It is a super-3 number, since 3×12451318991³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12451348991) 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, 478820 + ... + 504153.

It is an arithmetic number, because the mean of its divisors is an integer number (1592417880).

Almost surely, 2^12451318991 is an apocalyptic number.

12451318991 is a deficient number, since it is larger than the sum of its proper divisors (288024049).

12451318991 is an equidigital number, since it uses as much as digits as its factorization.

12451318991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983265.

The product of its digits is 77760, while the sum is 44.

The spelling of 12451318991 in words is "twelve billion, four hundred fifty-one million, three hundred eighteen thousand, nine hundred ninety-one".