16631206285 has 16 divisors (see below), whose sum is σ = 20364435504. Its totient is φ = 13034391552.

The previous prime is 16631206279. The next prime is 16631206297. The reversal of 16631206285 is 58260213661.

It can be written as a sum of positive squares in 8 ways, for example, as 814874116 + 15816332169 = 28546^2 + 125763^2 .

It is a cyclic number.

It is not a de Polignac number, because 16631206285 - 2¹¹ = 16631204237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131719 + ... + 224971.

It is an arithmetic number, because the mean of its divisors is an integer number (1272777219).

Almost surely, 2^16631206285 is an apocalyptic number.

It is an amenable number.

16631206285 is a deficient number, since it is larger than the sum of its proper divisors (3733229219).

16631206285 is an equidigital number, since it uses as much as digits as its factorization.

16631206285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93984.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 16631206285 in words is "sixteen billion, six hundred thirty-one million, two hundred six thousand, two hundred eighty-five".