726020981489 has 2 divisors, whose sum is σ = 726020981490. Its totient is φ = 726020981488.

The previous prime is 726020981447. The next prime is 726020981527. The reversal of 726020981489 is 984189020627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 702550741489 + 23470240000 = 838183^2 + 153200^2 .

It is a cyclic number.

It is not a de Polignac number, because 726020981489 - 2³² = 721726014193 is a prime.

It is not a weakly prime, because it can be changed into another prime (726026981489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363010490744 + 363010490745.

It is an arithmetic number, because the mean of its divisors is an integer number (363010490745).

Almost surely, 2^726020981489 is an apocalyptic number.

It is an amenable number.

726020981489 is a deficient number, since it is larger than the sum of its proper divisors (1).

726020981489 is an equidigital number, since it uses as much as digits as its factorization.

726020981489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3483648, while the sum is 56.

The spelling of 726020981489 in words is "seven hundred twenty-six billion, twenty million, nine hundred eighty-one thousand, four hundred eighty-nine".