123444456790 has 32 divisors (see below), whose sum is σ = 228232069344. Its totient is φ = 48037639680.

The previous prime is 123444456767. The next prime is 123444456799. The reversal of 123444456790 is 97654444321.

It is a super-3 number, since 3×123444456790³ (a number of 34 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123444456799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4693657 + ... + 4719883.

It is an arithmetic number, because the mean of its divisors is an integer number (7132252167).

Almost surely, 2^123444456790 is an apocalyptic number.

123444456790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123444456790 is a deficient number, since it is larger than the sum of its proper divisors (104787612554).

123444456790 is a wasteful number, since it uses less digits than its factorization.

123444456790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38992.

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 123444456790 in words is "one hundred twenty-three billion, four hundred forty-four million, four hundred fifty-six thousand, seven hundred ninety".