4623726218321 has 4 divisors (see below), whose sum is σ = 5284258535232. Its totient is φ = 3963193901412.

The previous prime is 4623726218269. The next prime is 4623726218333. The reversal of 4623726218321 is 1238126273264.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4623726218321 - 2¹⁸ = 4623725956177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4623726218021) 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, 330266158445 + ... + 330266158458.

It is an arithmetic number, because the mean of its divisors is an integer number (1321064633808).

Almost surely, 2^{4623726218321} is an apocalyptic number.

It is an amenable number.

4623726218321 is a deficient number, since it is larger than the sum of its proper divisors (660532316911).

4623726218321 is an equidigital number, since it uses as much as digits as its factorization.

4623726218321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660532316910.

The product of its digits is 1161216, while the sum is 47.

The spelling of 4623726218321 in words is "four trillion, six hundred twenty-three billion, seven hundred twenty-six million, two hundred eighteen thousand, three hundred twenty-one".