122889144464 has 40 divisors (see below), whose sum is σ = 238875228120. Its totient is φ = 61244080128.

The previous prime is 122889144457. The next prime is 122889144467. The reversal of 122889144464 is 464441988221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 78012958864 + 44876185600 = 279308^2 + 211840^2 .

It is not an unprimeable number, because it can be changed into a prime (122889144467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23589092 + ... + 23594300.

It is an arithmetic number, because the mean of its divisors is an integer number (5971880703).

Almost surely, 2^122889144464 is an apocalyptic number.

It is an amenable number.

122889144464 is a deficient number, since it is larger than the sum of its proper divisors (115986083656).

122889144464 is a wasteful number, since it uses less digits than its factorization.

122889144464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9747 (or 9741 counting only the distinct ones).

The product of its digits is 3538944, while the sum is 53.

The spelling of 122889144464 in words is "one hundred twenty-two billion, eight hundred eighty-nine million, one hundred forty-four thousand, four hundred sixty-four".