123616301220 has 144 divisors (see below), whose sum is σ = 387606116352. Its totient is φ = 31856405760.

The previous prime is 123616301209. The next prime is 123616301257. The reversal of 123616301220 is 22103616321.

123616301220 is a `hidden beast` number, since 1 + 2 + 3 + 6 + 1 + 630 + 1 + 2 + 20 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4075029 + ... + 4105251.

Almost surely, 2^123616301220 is an apocalyptic number.

123616301220 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 123616301220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193803058176).

123616301220 is an abundant number, since it is smaller than the sum of its proper divisors (263989815132).

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

123616301220 is a wasteful number, since it uses less digits than its factorization.

123616301220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31002 (or 30997 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 123616301220 its reverse (22103616321), we get a palindrome (145719917541).

The spelling of 123616301220 in words is "one hundred twenty-three billion, six hundred sixteen million, three hundred one thousand, two hundred twenty".