4971688613 has 2 divisors, whose sum is σ = 4971688614. Its totient is φ = 4971688612.

The previous prime is 4971688597. The next prime is 4971688649. The reversal of 4971688613 is 3168861794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4877346244 + 94342369 = 69838^2 + 9713^2 .

It is a cyclic number.

It is not a de Polignac number, because 4971688613 - 2⁴ = 4971688597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4971688693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2485844306 + 2485844307.

It is an arithmetic number, because the mean of its divisors is an integer number (2485844307).

Almost surely, 2^4971688613 is an apocalyptic number.

It is an amenable number.

4971688613 is a deficient number, since it is larger than the sum of its proper divisors (1).

4971688613 is an equidigital number, since it uses as much as digits as its factorization.

4971688613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 53.

The square root of 4971688613 is about 70510.2021908887. The cubic root of 4971688613 is about 1706.7423831451.

The spelling of 4971688613 in words is "four billion, nine hundred seventy-one million, six hundred eighty-eight thousand, six hundred thirteen".