9977965211 has 2 divisors, whose sum is σ = 9977965212. Its totient is φ = 9977965210.

The previous prime is 9977965189. The next prime is 9977965279. The reversal of 9977965211 is 1125697799.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9977965211 - 2⁶ = 9977965147 is a prime.

It is not a weakly prime, because it can be changed into another prime (9977965411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4988982605 + 4988982606.

It is an arithmetic number, because the mean of its divisors is an integer number (4988982606).

Almost surely, 2^9977965211 is an apocalyptic number.

9977965211 is a deficient number, since it is larger than the sum of its proper divisors (1).

9977965211 is an equidigital number, since it uses as much as digits as its factorization.

9977965211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2143260, while the sum is 56.

The square root of 9977965211 is about 99889.7652965508. The cubic root of 9977965211 is about 2152.8511092058.

The spelling of 9977965211 in words is "nine billion, nine hundred seventy-seven million, nine hundred sixty-five thousand, two hundred eleven".