18620609323008 has 2016 divisors, whose sum is σ = 69405308179200. Its totient is φ = 4333507706880.

The previous prime is 18620609323003. The next prime is 18620609323039. The reversal of 18620609323008 is 80032390602681.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18620609323003) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 209220329428 + ... + 209220329516.

It is an arithmetic number, because the mean of its divisors is an integer number (34427236200).

Almost surely, 2^{18620609323008} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18620609323008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34702654089600).

18620609323008 is an abundant number, since it is smaller than the sum of its proper divisors (50784698856192).

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

18620609323008 is a wasteful number, since it uses less digits than its factorization.

18620609323008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 48.

Adding to 18620609323008 its reverse (80032390602681), we get a palindrome (98652999925689).

The spelling of 18620609323008 in words is "eighteen trillion, six hundred twenty billion, six hundred nine million, three hundred twenty-three thousand, eight".