264334240642123 has 4 divisors (see below), whose sum is σ = 264337560627808. Its totient is φ = 264330920656440.

The previous prime is 264334240642117. The next prime is 264334240642141. The reversal of 264334240642123 is 321246042433462.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264334240642123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264334240642193) 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, 1659873411 + ... + 1660032652.

It is an arithmetic number, because the mean of its divisors is an integer number (66084390156952).

Almost surely, 2^{264334240642123} is an apocalyptic number.

264334240642123 is a deficient number, since it is larger than the sum of its proper divisors (3319985685).

264334240642123 is an equidigital number, since it uses as much as digits as its factorization.

264334240642123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3319985684.

The product of its (nonzero) digits is 3981312, while the sum is 46.

The spelling of 264334240642123 in words is "two hundred sixty-four trillion, three hundred thirty-four billion, two hundred forty million, six hundred forty-two thousand, one hundred twenty-three".