123612490000 has 50 divisors (see below), whose sum is σ = 299278223750. Its totient is φ = 49444992000.

The previous prime is 123612489989. The next prime is 123612490009. The reversal of 123612490000 is 94216321.

It can be written as a sum of positive squares in 5 ways, for example, as 60904316944 + 62708173056 = 246788^2 + 250416^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is not an unprimeable number, because it can be changed into a prime (123612490009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6170625 + ... + 6190624.

It is an arithmetic number, because the mean of its divisors is an integer number (5985564475).

Almost surely, 2^123612490000 is an apocalyptic number.

123612490000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123612490000 is an abundant number, since it is smaller than the sum of its proper divisors (175665733750).

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

123612490000 is an equidigital number, since it uses as much as digits as its factorization.

123612490000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12361277 (or 12361256 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 123612490000 in words is "one hundred twenty-three billion, six hundred twelve million, four hundred ninety thousand".