123225610450440 has 128 divisors (see below), whose sum is σ = 392577166857600. Its totient is φ = 30855187722240.

The previous prime is 123225610450381. The next prime is 123225610450447. The reversal of 123225610450440 is 44054016522321.

It is not an unprimeable number, because it can be changed into a prime (123225610450447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238885371 + ... + 239400650.

It is an arithmetic number, because the mean of its divisors is an integer number (3067009116075).

Almost surely, 2^{123225610450440} is an apocalyptic number.

123225610450440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123225610450440 is an abundant number, since it is smaller than the sum of its proper divisors (269351556407160).

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

123225610450440 is a wasteful number, since it uses less digits than its factorization.

123225610450440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478286167 (or 478286163 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 39.

Adding to 123225610450440 its reverse (44054016522321), we get a palindrome (167279626972761).

The spelling of 123225610450440 in words is "one hundred twenty-three trillion, two hundred twenty-five billion, six hundred ten million, four hundred fifty thousand, four hundred forty".