12411845256961 has 4 divisors (see below), whose sum is σ = 12442797489924. Its totient is φ = 12380893024000.

The previous prime is 12411845256917. The next prime is 12411845256973. The reversal of 12411845256961 is 16965254811421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9067174880625 + 3344670376336 = 3011175^2 + 1828844^2 .

It is a cyclic number.

It is not a de Polignac number, because 12411845256961 - 2¹⁵ = 12411845224193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12411845256901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15476115880 + ... + 15476116681.

It is an arithmetic number, because the mean of its divisors is an integer number (3110699372481).

Almost surely, 2^{12411845256961} is an apocalyptic number.

It is an amenable number.

12411845256961 is a deficient number, since it is larger than the sum of its proper divisors (30952232963).

12411845256961 is an equidigital number, since it uses as much as digits as its factorization.

12411845256961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30952232962.

The product of its digits is 4147200, while the sum is 55.

The spelling of 12411845256961 in words is "twelve trillion, four hundred eleven billion, eight hundred forty-five million, two hundred fifty-six thousand, nine hundred sixty-one".