1616523043013 has 8 divisors (see below), whose sum is σ = 1713052174680. Its totient is φ = 1522713041920.

The previous prime is 1616523042917. The next prime is 1616523043019. The reversal of 1616523043013 is 3103403256161.

It can be written as a sum of positive squares in 4 ways, for example, as 202844846689 + 1413678196324 = 450383^2 + 1188982^2 .

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-1616523043013 is a prime.

It is a super-2 number, since 2×1616523043013² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616523043019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679781420 + ... + 679783797.

It is an arithmetic number, because the mean of its divisors is an integer number (214131521835).

Almost surely, 2^{1616523043013} is an apocalyptic number.

It is an amenable number.

1616523043013 is a deficient number, since it is larger than the sum of its proper divisors (96529131667).

1616523043013 is a wasteful number, since it uses less digits than its factorization.

1616523043013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359565287.

The product of its (nonzero) digits is 38880, while the sum is 35.

Adding to 1616523043013 its reverse (3103403256161), we get a palindrome (4719926299174).

The spelling of 1616523043013 in words is "one trillion, six hundred sixteen billion, five hundred twenty-three million, forty-three thousand, thirteen".