726413585437 has 2 divisors, whose sum is σ = 726413585438. Its totient is φ = 726413585436.

The previous prime is 726413585383. The next prime is 726413585467. The reversal of 726413585437 is 734585314627.

726413585437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 726413585401 + 36 = 852299^2 + 6^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726413585437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726413585467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363206792718 + 363206792719.

It is an arithmetic number, because the mean of its divisors is an integer number (363206792719).

Almost surely, 2^726413585437 is an apocalyptic number.

It is an amenable number.

726413585437 is a deficient number, since it is larger than the sum of its proper divisors (1).

726413585437 is an equidigital number, since it uses as much as digits as its factorization.

726413585437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16934400, while the sum is 55.

The spelling of 726413585437 in words is "seven hundred twenty-six billion, four hundred thirteen million, five hundred eighty-five thousand, four hundred thirty-seven".