16620481328 has 40 divisors (see below), whose sum is σ = 35253892416. Its totient is φ = 7528046400.

The previous prime is 16620481301. The next prime is 16620481333. The reversal of 16620481328 is 82318402661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117038 + ... + 216653.

Almost surely, 2^16620481328 is an apocalyptic number.

It is an amenable number.

16620481328 is an abundant number, since it is smaller than the sum of its proper divisors (18633411088).

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

16620481328 is a wasteful number, since it uses less digits than its factorization.

16620481328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333993 (or 333987 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

Adding to 16620481328 its reverse (82318402661), we get a palindrome (98938883989).

The spelling of 16620481328 in words is "sixteen billion, six hundred twenty million, four hundred eighty-one thousand, three hundred twenty-eight".