9476940931649 has 2 divisors, whose sum is σ = 9476940931650. Its totient is φ = 9476940931648.

The previous prime is 9476940931631. The next prime is 9476940931691. The reversal of 9476940931649 is 9461390496749.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9315509745424 + 161431186225 = 3052132^2 + 401785^2 .

It is a cyclic number.

It is not a de Polignac number, because 9476940931649 - 2³⁶ = 9408221454913 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (9476940931609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4738470465824 + 4738470465825.

It is an arithmetic number, because the mean of its divisors is an integer number (4738470465825).

Almost surely, 2^{9476940931649} is an apocalyptic number.

It is an amenable number.

9476940931649 is a deficient number, since it is larger than the sum of its proper divisors (1).

9476940931649 is an equidigital number, since it uses as much as digits as its factorization.

9476940931649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317447424, while the sum is 71.

The spelling of 9476940931649 in words is "nine trillion, four hundred seventy-six billion, nine hundred forty million, nine hundred thirty-one thousand, six hundred forty-nine".