16516656245 has 8 divisors (see below), whose sum is σ = 20091494616. Its totient is φ = 13032320256.

The previous prime is 16516656217. The next prime is 16516656283. The reversal of 16516656245 is 54265661561.

It can be written as a sum of positive squares in 4 ways, for example, as 791747044 + 15724909201 = 28138^2 + 125399^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16516656245 - 2¹² = 16516652149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16516656245.

It is a congruent number.

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, 22625192 + ... + 22625921.

It is an arithmetic number, because the mean of its divisors is an integer number (2511436827).

Almost surely, 2^16516656245 is an apocalyptic number.

It is an amenable number.

16516656245 is a deficient number, since it is larger than the sum of its proper divisors (3574838371).

16516656245 is an equidigital number, since it uses as much as digits as its factorization.

16516656245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45251191.

The product of its digits is 1296000, while the sum is 47.

The spelling of 16516656245 in words is "sixteen billion, five hundred sixteen million, six hundred fifty-six thousand, two hundred forty-five".