122445566789 has 24 divisors (see below), whose sum is σ = 154389411072. Its totient is φ = 95052035520.

The previous prime is 122445566759. The next prime is 122445566797. The reversal of 122445566789 is 987665544221.

It is a de Polignac number, because none of the positive numbers 2^k-122445566789 is a prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122445566759) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 913757 + ... + 1039154.

It is an arithmetic number, because the mean of its divisors is an integer number (6432892128).

Almost surely, 2^122445566789 is an apocalyptic number.

It is an amenable number.

122445566789 is a deficient number, since it is larger than the sum of its proper divisors (31943844283).

122445566789 is a wasteful number, since it uses less digits than its factorization.

122445566789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952997 (or 1952984 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 59.

The spelling of 122445566789 in words is "one hundred twenty-two billion, four hundred forty-five million, five hundred sixty-six thousand, seven hundred eighty-nine".