12526661540646 has 48 divisors (see below), whose sum is σ = 29609293529088. Its totient is φ = 3795852812400.

The previous prime is 12526661540611. The next prime is 12526661540651. The reversal of 12526661540646 is 64604516662521.

12526661540646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12526661540592 and 12526661540601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6437211 + ... + 8154201.

It is an arithmetic number, because the mean of its divisors is an integer number (616860281856).

Almost surely, 2^{12526661540646} is an apocalyptic number.

12526661540646 is an abundant number, since it is smaller than the sum of its proper divisors (17082631988442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12526661540646 is a wasteful number, since it uses less digits than its factorization.

12526661540646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753857 (or 1753854 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 54.

The spelling of 12526661540646 in words is "twelve trillion, five hundred twenty-six billion, six hundred sixty-one million, five hundred forty thousand, six hundred forty-six".