1616364643105 has 4 divisors (see below), whose sum is σ = 1939637571732. Its totient is φ = 1293091714480.

The previous prime is 1616364643087. The next prime is 1616364643151. The reversal of 1616364643105 is 5013464636161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 448858460961 + 1167506182144 = 669969^2 + 1080512^2 .

It is not a de Polignac number, because 1616364643105 - 2²³ = 1616356254497 is a prime.

It is a super-2 number, since 2×1616364643105² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161636464306 + ... + 161636464315.

It is an arithmetic number, because the mean of its divisors is an integer number (484909392933).

Almost surely, 2^{1616364643105} is an apocalyptic number.

It is an amenable number.

1616364643105 is a deficient number, since it is larger than the sum of its proper divisors (323272928627).

1616364643105 is an equidigital number, since it uses as much as digits as its factorization.

1616364643105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323272928626.

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 1616364643105 in words is "one trillion, six hundred sixteen billion, three hundred sixty-four million, six hundred forty-three thousand, one hundred five".