9913806914579 has 2 divisors, whose sum is σ = 9913806914580. Its totient is φ = 9913806914578.

The previous prime is 9913806914507. The next prime is 9913806914657. The reversal of 9913806914579 is 9754196083199.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9913806914579 is a prime.

It is not a weakly prime, because it can be changed into another prime (9913806914279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4956903457289 + 4956903457290.

It is an arithmetic number, because the mean of its divisors is an integer number (4956903457290).

Almost surely, 2^{9913806914579} is an apocalyptic number.

9913806914579 is a deficient number, since it is larger than the sum of its proper divisors (1).

9913806914579 is an equidigital number, since it uses as much as digits as its factorization.

9913806914579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132269760, while the sum is 71.

The spelling of 9913806914579 in words is "nine trillion, nine hundred thirteen billion, eight hundred six million, nine hundred fourteen thousand, five hundred seventy-nine".