9951706771 has 2 divisors, whose sum is σ = 9951706772. Its totient is φ = 9951706770.

The previous prime is 9951706711. The next prime is 9951706777. The reversal of 9951706771 is 1776071599.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9951706771 - 2²⁵ = 9918152339 is a prime.

It is not a weakly prime, because it can be changed into another prime (9951706777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4975853385 + 4975853386.

It is an arithmetic number, because the mean of its divisors is an integer number (4975853386).

Almost surely, 2^9951706771 is an apocalyptic number.

9951706771 is a deficient number, since it is larger than the sum of its proper divisors (1).

9951706771 is an equidigital number, since it uses as much as digits as its factorization.

9951706771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 833490, while the sum is 52.

The square root of 9951706771 is about 99758.2416194271. The cubic root of 9951706771 is about 2150.9609384651.

The spelling of 9951706771 in words is "nine billion, nine hundred fifty-one million, seven hundred six thousand, seven hundred seventy-one".