77160128852 has 24 divisors (see below), whose sum is σ = 135264478440. Its totient is φ = 38513180160.

The previous prime is 77160128849. The next prime is 77160128879. The reversal of 77160128852 is 25882106177.

It can be written as a sum of positive squares in 4 ways, for example, as 39012570256 + 38147558596 = 197516^2 + 195314^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77160128797 and 77160128806.

It is a congruent number.

It is an unprimeable number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11409152 + ... + 11415912.

It is an arithmetic number, because the mean of its divisors is an integer number (5636019935).

Almost surely, 2^77160128852 is an apocalyptic number.

It is an amenable number.

77160128852 is a deficient number, since it is larger than the sum of its proper divisors (58104349588).

77160128852 is a wasteful number, since it uses less digits than its factorization.

77160128852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11291 (or 11289 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 47.

The spelling of 77160128852 in words is "seventy-seven billion, one hundred sixty million, one hundred twenty-eight thousand, eight hundred fifty-two".