12546523001 has 4 divisors (see below), whose sum is σ = 12657554292. Its totient is φ = 12435491712.

The previous prime is 12546522991. The next prime is 12546523007. The reversal of 12546523001 is 10032564521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10032564521 = 7 ⋅1433223503.

It can be written as a sum of positive squares in 2 ways, for example, as 1059828025 + 11486694976 = 32555^2 + 107176^2 .

It is a cyclic number.

It is not a de Polignac number, because 12546523001 - 2²⁶ = 12479414137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12546523007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55515476 + ... + 55515701.

It is an arithmetic number, because the mean of its divisors is an integer number (3164388573).

Almost surely, 2^12546523001 is an apocalyptic number.

It is an amenable number.

12546523001 is a deficient number, since it is larger than the sum of its proper divisors (111031291).

12546523001 is a wasteful number, since it uses less digits than its factorization.

12546523001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111031290.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 12546523001 in words is "twelve billion, five hundred forty-six million, five hundred twenty-three thousand, one".