726540237420407 has 2 divisors, whose sum is σ = 726540237420408. Its totient is φ = 726540237420406.

The previous prime is 726540237420397. The next prime is 726540237420443. The reversal of 726540237420407 is 704024732045627.

726540237420407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 726540237420407 - 2⁴ = 726540237420391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726540237420497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363270118710203 + 363270118710204.

It is an arithmetic number, because the mean of its divisors is an integer number (363270118710204).

Almost surely, 2^{726540237420407} is an apocalyptic number.

726540237420407 is a deficient number, since it is larger than the sum of its proper divisors (1).

726540237420407 is an equidigital number, since it uses as much as digits as its factorization.

726540237420407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15805440, while the sum is 53.

The spelling of 726540237420407 in words is "seven hundred twenty-six trillion, five hundred forty billion, two hundred thirty-seven million, four hundred twenty thousand, four hundred seven".