744868539889 has 2 divisors, whose sum is σ = 744868539890. Its totient is φ = 744868539888.

The previous prime is 744868539799. The next prime is 744868539911. The reversal of 744868539889 is 988935868447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 727788141025 + 17080398864 = 853105^2 + 130692^2 .

It is a cyclic number.

It is not a de Polignac number, because 744868539889 - 2⁷ = 744868539761 is a prime.

It is not a weakly prime, because it can be changed into another prime (744868039889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372434269944 + 372434269945.

It is an arithmetic number, because the mean of its divisors is an integer number (372434269945).

Almost surely, 2^744868539889 is an apocalyptic number.

It is an amenable number.

744868539889 is a deficient number, since it is larger than the sum of its proper divisors (1).

744868539889 is an equidigital number, since it uses as much as digits as its factorization.

744868539889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3344302080, while the sum is 79.

The spelling of 744868539889 in words is "seven hundred forty-four billion, eight hundred sixty-eight million, five hundred thirty-nine thousand, eight hundred eighty-nine".