77845116271 has 8 divisors (see below), whose sum is σ = 83844329184. Its totient is φ = 71847492960.

The previous prime is 77845116259. The next prime is 77845116329. The reversal of 77845116271 is 17261154877.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77845116271 - 2⁹ = 77845115759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77845116071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294700 + ... + 492481.

It is an arithmetic number, because the mean of its divisors is an integer number (10480541148).

Almost surely, 2^77845116271 is an apocalyptic number.

77845116271 is a deficient number, since it is larger than the sum of its proper divisors (5999212913).

77845116271 is a wasteful number, since it uses less digits than its factorization.

77845116271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794801.

The product of its digits is 658560, while the sum is 49.

The spelling of 77845116271 in words is "seventy-seven billion, eight hundred forty-five million, one hundred sixteen thousand, two hundred seventy-one".