78868827122 has 18 divisors (see below), whose sum is σ = 118852067943. Its totient is φ = 39252314784.

The previous prime is 78868827049. The next prime is 78868827127. The reversal of 78868827122 is 22172886887.

It can be written as a sum of positive squares in 5 ways, for example, as 29766255841 + 49102571281 = 172529^2 + 221591^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=198581.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78868827127) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 138609254 + ... + 138609822.

Almost surely, 2^78868827122 is an apocalyptic number.

78868827122 is a deficient number, since it is larger than the sum of its proper divisors (39983240821).

78868827122 is an frugal number, since it uses more digits than its factorization.

78868827122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838 (or 920 counting only the distinct ones).

The product of its digits is 9633792, while the sum is 59.

The spelling of 78868827122 in words is "seventy-eight billion, eight hundred sixty-eight million, eight hundred twenty-seven thousand, one hundred twenty-two".