16620105265 has 16 divisors (see below), whose sum is σ = 20009768400. Its totient is φ = 13252377600.

The previous prime is 16620105253. The next prime is 16620105389. The reversal of 16620105265 is 56250102661.

It can be written as a sum of positive squares in 8 ways, for example, as 265787809 + 16354317456 = 16303^2 + 127884^2 .

It is not a de Polignac number, because 16620105265 - 2⁷ = 16620105137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16620105265.

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 15 ways as a sum of consecutive naturals, for example, 3572661 + ... + 3577309.

It is an arithmetic number, because the mean of its divisors is an integer number (1250610525).

Almost surely, 2^16620105265 is an apocalyptic number.

It is an amenable number.

16620105265 is a deficient number, since it is larger than the sum of its proper divisors (3389663135).

16620105265 is a wasteful number, since it uses less digits than its factorization.

16620105265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6852.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 16620105265 in words is "sixteen billion, six hundred twenty million, one hundred five thousand, two hundred sixty-five".