9997776311 has 2 divisors, whose sum is σ = 9997776312. Its totient is φ = 9997776310.

The previous prime is 9997776259. The next prime is 9997776329. The reversal of 9997776311 is 1136777999.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9997776311 is a prime.

It is a Sophie Germain prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9997776331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998888155 + 4998888156.

It is an arithmetic number, because the mean of its divisors is an integer number (4998888156).

Almost surely, 2^9997776311 is an apocalyptic number.

9997776311 is a deficient number, since it is larger than the sum of its proper divisors (1).

9997776311 is an equidigital number, since it uses as much as digits as its factorization.

9997776311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4500846, while the sum is 59.

The square root of 9997776311 is about 99988.8809368322. The cubic root of 9997776311 is about 2154.2749851028.

The spelling of 9997776311 in words is "nine billion, nine hundred ninety-seven million, seven hundred seventy-six thousand, three hundred eleven".