264401243063641 has 4 divisors (see below), whose sum is σ = 264408219939892. Its totient is φ = 264394266187392.

The previous prime is 264401243063609. The next prime is 264401243063677. The reversal of 264401243063641 is 146360342104462.

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 21379489449616 + 243021753614025 = 4623796^2 + 15589155^2 .

It is a cyclic number.

It is not a de Polignac number, because 264401243063641 - 2⁵ = 264401243063609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 264401243063591 and 264401243063600.

It is not an unprimeable number, because it can be changed into a prime (264401243060641) 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, 3488381280 + ... + 3488457073.

It is an arithmetic number, because the mean of its divisors is an integer number (66102054984973).

Almost surely, 2^{264401243063641} is an apocalyptic number.

It is an amenable number.

264401243063641 is a deficient number, since it is larger than the sum of its proper divisors (6976876251).

264401243063641 is an equidigital number, since it uses as much as digits as its factorization.

264401243063641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6976876250.

The product of its (nonzero) digits is 1990656, while the sum is 46.

The spelling of 264401243063641 in words is "two hundred sixty-four trillion, four hundred one billion, two hundred forty-three million, sixty-three thousand, six hundred forty-one".