123444253444 has 24 divisors (see below), whose sum is σ = 216544194720. Its totient is φ = 61574612736.

The previous prime is 123444253423. The next prime is 123444253451. The reversal of 123444253444 is 444352444321.

It is a super-2 number, since 2×123444253444² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123444253397 and 123444253406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4118199 + ... + 4148065.

It is an arithmetic number, because the mean of its divisors is an integer number (9022674780).

Almost surely, 2^123444253444 is an apocalyptic number.

It is an amenable number.

123444253444 is a deficient number, since it is larger than the sum of its proper divisors (93099941276).

123444253444 is a wasteful number, since it uses less digits than its factorization.

123444253444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32307 (or 32305 counting only the distinct ones).

The product of its digits is 737280, while the sum is 40.

Adding to 123444253444 its reverse (444352444321), we get a palindrome (567796697765).

The spelling of 123444253444 in words is "one hundred twenty-three billion, four hundred forty-four million, two hundred fifty-three thousand, four hundred forty-four".