8713551973109 has 2 divisors, whose sum is σ = 8713551973110. Its totient is φ = 8713551973108.

The previous prime is 8713551973099. The next prime is 8713551973129. The reversal of 8713551973109 is 9013791553178.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5801580370609 + 2911971602500 = 2408647^2 + 1706450^2 .

It is a cyclic number.

It is not a de Polignac number, because 8713551973109 - 2¹² = 8713551969013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8713551973129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4356775986554 + 4356775986555.

It is an arithmetic number, because the mean of its divisors is an integer number (4356775986555).

Almost surely, 2^{8713551973109} is an apocalyptic number.

It is an amenable number.

8713551973109 is a deficient number, since it is larger than the sum of its proper divisors (1).

8713551973109 is an equidigital number, since it uses as much as digits as its factorization.

8713551973109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7144200, while the sum is 59.

The spelling of 8713551973109 in words is "eight trillion, seven hundred thirteen billion, five hundred fifty-one million, nine hundred seventy-three thousand, one hundred nine".