77120962216 has 8 divisors (see below), whose sum is σ = 144601804170. Its totient is φ = 38560481104.

The previous prime is 77120962211. The next prime is 77120962241. The reversal of 77120962216 is 61226902177.

It can be written as a sum of positive squares in only one way, i.e., 58638559716 + 18482402500 = 242154^2 + 135950^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (77120962211) 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, 4820060131 + ... + 4820060146.

Almost surely, 2^77120962216 is an apocalyptic number.

It is an amenable number.

77120962216 is a deficient number, since it is larger than the sum of its proper divisors (67480841954).

77120962216 is a wasteful number, since it uses less digits than its factorization.

77120962216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9640120283 (or 9640120279 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 77120962216 in words is "seventy-seven billion, one hundred twenty million, nine hundred sixty-two thousand, two hundred sixteen".