726398953643 has 8 divisors (see below), whose sum is σ = 792682202160. Its totient is φ = 660156868480.

The previous prime is 726398953619. The next prime is 726398953729. The reversal of 726398953643 is 346359893627.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 726398953643 - 2⁸ = 726398953387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 726398953643.

It is not an unprimeable number, because it can be changed into a prime (726398953613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10253930 + ... + 10324527.

It is an arithmetic number, because the mean of its divisors is an integer number (99085275270).

Almost surely, 2^726398953643 is an apocalyptic number.

726398953643 is a deficient number, since it is larger than the sum of its proper divisors (66283248517).

726398953643 is a wasteful number, since it uses less digits than its factorization.

726398953643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20581677.

The product of its digits is 176359680, while the sum is 65.

The spelling of 726398953643 in words is "seven hundred twenty-six billion, three hundred ninety-eight million, nine hundred fifty-three thousand, six hundred forty-three".