123441554440 has 32 divisors (see below), whose sum is σ = 282296675160. Its totient is φ = 48567168000.

The previous prime is 123441554429. The next prime is 123441554441. The reversal of 123441554440 is 44455144321.

It can be written as a sum of positive squares in 4 ways, for example, as 38950180164 + 84491374276 = 197358^2 + 290674^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 123441554440.

It is not an unprimeable number, because it can be changed into a prime (123441554441) 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, 25292961 + ... + 25297840.

Almost surely, 2^123441554440 is an apocalyptic number.

123441554440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123441554440 is an abundant number, since it is smaller than the sum of its proper divisors (158855120720).

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

123441554440 is a wasteful number, since it uses less digits than its factorization.

123441554440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50590873 (or 50590869 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 123441554440 its reverse (44455144321), we get a palindrome (167896698761).

The spelling of 123441554440 in words is "one hundred twenty-three billion, four hundred forty-one million, five hundred fifty-four thousand, four hundred forty".