123444456780 has 48 divisors (see below), whose sum is σ = 346047942240. Its totient is φ = 32880096768.

The previous prime is 123444456767. The next prime is 123444456799. The reversal of 123444456780 is 87654444321.

123444456780 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×123444456780³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1148935 + ... + 1251774.

It is an arithmetic number, because the mean of its divisors is an integer number (7209332130).

Almost surely, 2^123444456780 is an apocalyptic number.

123444456780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123444456780 is an abundant number, since it is smaller than the sum of its proper divisors (222603485460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123444456780 is a wasteful number, since it uses less digits than its factorization.

123444456780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401578 (or 2401576 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 48.

The spelling of 123444456780 in words is "one hundred twenty-three billion, four hundred forty-four million, four hundred fifty-six thousand, seven hundred eighty".