12531116216641 has 8 divisors (see below), whose sum is σ = 13874343057504. Its totient is φ = 11221895118720.

The previous prime is 12531116216621. The next prime is 12531116216653. The reversal of 12531116216641 is 14661261113521.

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

It is not a de Polignac number, because 12531116216641 - 2⁷ = 12531116216513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12531116216594 and 12531116216603.

It is not an unprimeable number, because it can be changed into a prime (12531116216611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8501434960 + ... + 8501436433.

It is an arithmetic number, because the mean of its divisors is an integer number (1734292882188).

Almost surely, 2^{12531116216641} is an apocalyptic number.

12531116216641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12531116216641 is a deficient number, since it is larger than the sum of its proper divisors (1343226840863).

12531116216641 is a wasteful number, since it uses less digits than its factorization.

12531116216641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17002871471.

The product of its digits is 51840, while the sum is 40.

The spelling of 12531116216641 in words is "twelve trillion, five hundred thirty-one billion, one hundred sixteen million, two hundred sixteen thousand, six hundred forty-one".