16620405846 has 96 divisors (see below), whose sum is σ = 38164573440. Its totient is φ = 4816848960.

The previous prime is 16620405829. The next prime is 16620405859. The reversal of 16620405846 is 64850402661.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16620405798 and 16620405807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1579615 + ... + 1590101.

It is an arithmetic number, because the mean of its divisors is an integer number (397547640).

Almost surely, 2^16620405846 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16620405846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19082286720).

16620405846 is an abundant number, since it is smaller than the sum of its proper divisors (21544167594).

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

16620405846 is a wasteful number, since it uses less digits than its factorization.

16620405846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10610 (or 10599 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 16620405846 in words is "sixteen billion, six hundred twenty million, four hundred five thousand, eight hundred forty-six".