16446632730 has 128 divisors (see below), whose sum is σ = 43936045056. Its totient is φ = 3906489600.

The previous prime is 16446632729. The next prime is 16446632809. The reversal of 16446632730 is 3723664461.

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, 5695347 + ... + 5698233.

It is an arithmetic number, because the mean of its divisors is an integer number (343250352).

Almost surely, 2^16446632730 is an apocalyptic number.

16446632730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16446632730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21968022528).

16446632730 is an abundant number, since it is smaller than the sum of its proper divisors (27489412326).

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

16446632730 is a wasteful number, since it uses less digits than its factorization.

16446632730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3252.

The product of its (nonzero) digits is 435456, while the sum is 42.

The spelling of 16446632730 in words is "sixteen billion, four hundred forty-six million, six hundred thirty-two thousand, seven hundred thirty".