123012044544 has 72 divisors (see below), whose sum is σ = 327492950400. Its totient is φ = 40991300608.

The previous prime is 123012044509. The next prime is 123012044567. The reversal of 123012044544 is 445440210321.

It is a congruent number.

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, 2639557 + ... + 2685755.

It is an arithmetic number, because the mean of its divisors is an integer number (4548513200).

Almost surely, 2^123012044544 is an apocalyptic number.

It is an amenable number.

123012044544 is an abundant number, since it is smaller than the sum of its proper divisors (204480905856).

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

123012044544 is an equidigital number, since it uses as much as digits as its factorization.

123012044544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49685 (or 49671 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 123012044544 its reverse (445440210321), we get a palindrome (568452254865).

The spelling of 123012044544 in words is "one hundred twenty-three billion, twelve million, forty-four thousand, five hundred forty-four".