726428047867 has 4 divisors (see below), whose sum is σ = 727367800320. Its totient is φ = 725488295416.

The previous prime is 726428047853. The next prime is 726428047909. The reversal of 726428047867 is 768740824627.

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

It is a cyclic number.

It is not a de Polignac number, because 726428047867 - 2⁷ = 726428047739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726428047967) 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, 469875067 + ... + 469876612.

It is an arithmetic number, because the mean of its divisors is an integer number (181841950080).

Almost surely, 2^726428047867 is an apocalyptic number.

726428047867 is a deficient number, since it is larger than the sum of its proper divisors (939752453).

726428047867 is an equidigital number, since it uses as much as digits as its factorization.

726428047867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939752452.

The product of its (nonzero) digits is 50577408, while the sum is 61.

The spelling of 726428047867 in words is "seven hundred twenty-six billion, four hundred twenty-eight million, forty-seven thousand, eight hundred sixty-seven".