16123300020 has 192 divisors, whose sum is σ = 51505977600. Its totient is φ = 4184801280.

The previous prime is 16123300019. The next prime is 16123300033. The reversal of 16123300020 is 2000332161.

16123300020 is a `hidden beast` number, since 1 + 612 + 3 + 30 + 0 + 0 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 16123299966 and 16123300002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17025187 + ... + 17026133.

It is an arithmetic number, because the mean of its divisors is an integer number (268260300).

Almost surely, 2^16123300020 is an apocalyptic number.

16123300020 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 16123300020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25752988800).

16123300020 is an abundant number, since it is smaller than the sum of its proper divisors (35382677580).

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

16123300020 is a wasteful number, since it uses less digits than its factorization.

16123300020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775 (or 1767 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 16123300020 its reverse (2000332161), we get a palindrome (18123632181).

The spelling of 16123300020 in words is "sixteen billion, one hundred twenty-three million, three hundred thousand, twenty".