122446778889 has 8 divisors (see below), whose sum is σ = 163264019040. Its totient is φ = 81630362336.

The previous prime is 122446778879. The next prime is 122446778929. The reversal of 122446778889 is 988877644221.

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 122446778889 - 2⁷ = 122446778761 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (122446778879) 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, 375694 + ... + 621320.

It is an arithmetic number, because the mean of its divisors is an integer number (20408002380).

Almost surely, 2^122446778889 is an apocalyptic number.

It is an amenable number.

122446778889 is a deficient number, since it is larger than the sum of its proper divisors (40817240151).

122446778889 is a wasteful number, since it uses less digits than its factorization.

122446778889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411799.

The product of its digits is 86704128, while the sum is 66.

The spelling of 122446778889 in words is "one hundred twenty-two billion, four hundred forty-six million, seven hundred seventy-eight thousand, eight hundred eighty-nine".