768944457009 has 6 divisors (see below), whose sum is σ = 1110697549026. Its totient is φ = 512629638000.

The previous prime is 768944457007. The next prime is 768944457023. The reversal of 768944457009 is 900754449867.

It can be written as a sum of positive squares in only one way, i.e., 386297054784 + 382647402225 = 621528^2 + 618585^2 .

It is not a de Polignac number, because 768944457009 - 2¹ = 768944457007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (768944457007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42719136492 + ... + 42719136509.

It is an arithmetic number, because the mean of its divisors is an integer number (185116258171).

Almost surely, 2^768944457009 is an apocalyptic number.

It is an amenable number.

768944457009 is a deficient number, since it is larger than the sum of its proper divisors (341753092017).

768944457009 is a wasteful number, since it uses less digits than its factorization.

768944457009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85438273007 (or 85438273004 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 63.

The spelling of 768944457009 in words is "seven hundred sixty-eight billion, nine hundred forty-four million, four hundred fifty-seven thousand, nine".