123360528640 has 144 divisors (see below), whose sum is σ = 301023313920. Its totient is φ = 48425287680.

The previous prime is 123360528637. The next prime is 123360528661. The reversal of 123360528640 is 46825063321.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 123360528593 and 123360528602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24096001 + ... + 24101119.

It is an arithmetic number, because the mean of its divisors is an integer number (2090439680).

Almost surely, 2^123360528640 is an apocalyptic number.

123360528640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123360528640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150511656960).

123360528640 is an abundant number, since it is smaller than the sum of its proper divisors (177662785280).

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

123360528640 is an equidigital number, since it uses as much as digits as its factorization.

123360528640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5488 (or 5474 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 123360528640 in words is "one hundred twenty-three billion, three hundred sixty million, five hundred twenty-eight thousand, six hundred forty".