16615210446420 has 192 divisors, whose sum is σ = 48459793536000. Its totient is φ = 4250076493824.

The previous prime is 16615210446397. The next prime is 16615210446427. The reversal of 16615210446420 is 2464401251661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16615210446427) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 153535891 + ... + 153644069.

It is an arithmetic number, because the mean of its divisors is an integer number (252394758000).

Almost surely, 2^{16615210446420} is an apocalyptic number.

16615210446420 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 16615210446420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24229896768000).

16615210446420 is an abundant number, since it is smaller than the sum of its proper divisors (31844583089580).

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

16615210446420 is a wasteful number, since it uses less digits than its factorization.

16615210446420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109302 (or 109300 counting only the distinct ones).

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

The spelling of 16615210446420 in words is "sixteen trillion, six hundred fifteen billion, two hundred ten million, four hundred forty-six thousand, four hundred twenty".