16245109661 has 8 divisors (see below), whose sum is σ = 17750575200. Its totient is φ = 14744417040.

The previous prime is 16245109637. The next prime is 16245109663. The reversal of 16245109661 is 16690154261.

16245109661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16245109661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16245109663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1186106 + ... + 1199723.

It is an arithmetic number, because the mean of its divisors is an integer number (2218821900).

Almost surely, 2^16245109661 is an apocalyptic number.

16245109661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16245109661 is a deficient number, since it is larger than the sum of its proper divisors (1505465539).

16245109661 is a wasteful number, since it uses less digits than its factorization.

16245109661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386459.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 16245109661 in words is "sixteen billion, two hundred forty-five million, one hundred nine thousand, six hundred sixty-one".