726027342332491 has 2 divisors, whose sum is σ = 726027342332492. Its totient is φ = 726027342332490.

The previous prime is 726027342332419. The next prime is 726027342332549. The reversal of 726027342332491 is 194233243720627.

It is a happy number.

Together with previous prime (726027342332419) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 726027342332491 - 2²⁵ = 726027308778059 is a prime.

It is not a weakly prime, because it can be changed into another prime (726027342332291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363013671166245 + 363013671166246.

It is an arithmetic number, because the mean of its divisors is an integer number (363013671166246).

Almost surely, 2^{726027342332491} is an apocalyptic number.

726027342332491 is a deficient number, since it is larger than the sum of its proper divisors (1).

726027342332491 is an equidigital number, since it uses as much as digits as its factorization.

726027342332491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18289152, while the sum is 55.

The spelling of 726027342332491 in words is "seven hundred twenty-six trillion, twenty-seven billion, three hundred forty-two million, three hundred thirty-two thousand, four hundred ninety-one".