12521846161 has 8 divisors (see below), whose sum is σ = 13661218944. Its totient is φ = 11382643920.

The previous prime is 12521846159. The next prime is 12521846167. The reversal of 12521846161 is 16164812521.

12521846161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12521846161 - 2¹ = 12521846159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12521846161.

It is not an unprimeable number, because it can be changed into a prime (12521846167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147960 + ... + 216646.

It is an arithmetic number, because the mean of its divisors is an integer number (1707652368).

Almost surely, 2^12521846161 is an apocalyptic number.

12521846161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12521846161 is a deficient number, since it is larger than the sum of its proper divisors (1139372783).

12521846161 is a wasteful number, since it uses less digits than its factorization.

12521846161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85271.

The product of its digits is 23040, while the sum is 37.

The spelling of 12521846161 in words is "twelve billion, five hundred twenty-one million, eight hundred forty-six thousand, one hundred sixty-one".