16620601305 has 192 divisors, whose sum is σ = 34796666880. Its totient is φ = 6695539200.

The previous prime is 16620601267. The next prime is 16620601321. The reversal of 16620601305 is 50310602661.

It is not a de Polignac number, because 16620601305 - 2¹¹ = 16620599257 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 72578931 + ... + 72579159.

It is an arithmetic number, because the mean of its divisors is an integer number (181232640).

Almost surely, 2^16620601305 is an apocalyptic number.

16620601305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16620601305 is an abundant number, since it is smaller than the sum of its proper divisors (18176065575).

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

16620601305 is a wasteful number, since it uses less digits than its factorization.

16620601305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 16620601305 in words is "sixteen billion, six hundred twenty million, six hundred one thousand, three hundred five".