9977643311 has 4 divisors (see below), whose sum is σ = 9985337472. Its totient is φ = 9969949152.

The previous prime is 9977643259. The next prime is 9977643329. The reversal of 9977643311 is 1133467799.

9977643311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1133467799 = 107 ⋅10593157.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9977643311 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 9977643311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9977645311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3845135 + ... + 3847728.

It is an arithmetic number, because the mean of its divisors is an integer number (2496334368).

Almost surely, 2^9977643311 is an apocalyptic number.

9977643311 is a deficient number, since it is larger than the sum of its proper divisors (7694161).

9977643311 is a wasteful number, since it uses less digits than its factorization.

9977643311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7694160.

The product of its digits is 857304, while the sum is 50.

The square root of 9977643311 is about 99888.1540073697. The cubic root of 9977643311 is about 2152.8279578514.

The spelling of 9977643311 in words is "nine billion, nine hundred seventy-seven million, six hundred forty-three thousand, three hundred eleven".