6401323816743 has 4 divisors (see below), whose sum is σ = 8535098422328. Its totient is φ = 4267549211160.

The previous prime is 6401323816709. The next prime is 6401323816759. The reversal of 6401323816743 is 3476183231046.

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

It is not a de Polignac number, because 6401323816743 - 2²⁹ = 6400786945831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6401323816692 and 6401323816701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6401323816703) 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, 1066887302788 + ... + 1066887302793.

It is an arithmetic number, because the mean of its divisors is an integer number (2133774605582).

Almost surely, 2^{6401323816743} is an apocalyptic number.

6401323816743 is a deficient number, since it is larger than the sum of its proper divisors (2133774605585).

6401323816743 is a wasteful number, since it uses less digits than its factorization.

6401323816743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133774605584.

The product of its (nonzero) digits is 1741824, while the sum is 48.

The spelling of 6401323816743 in words is "six trillion, four hundred one billion, three hundred twenty-three million, eight hundred sixteen thousand, seven hundred forty-three".