1616485648405 has 8 divisors (see below), whose sum is σ = 1941705264600. Its totient is φ = 1291906861056.

The previous prime is 1616485648357. The next prime is 1616485648417. The reversal of 1616485648405 is 5048465846161.

It can be written as a sum of positive squares in 4 ways, for example, as 4291691121 + 1612193957284 = 65511^2 + 1269722^2 .

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 1616485648405 - 2²³ = 1616477259797 is a prime.

It is a super-2 number, since 2×1616485648405² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1616485648405.

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, 160201660 + ... + 160211749.

It is an arithmetic number, because the mean of its divisors is an integer number (242713158075).

Almost surely, 2^{1616485648405} is an apocalyptic number.

It is an amenable number.

1616485648405 is a deficient number, since it is larger than the sum of its proper divisors (325219616195).

1616485648405 is a wasteful number, since it uses less digits than its factorization.

1616485648405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320414423.

The product of its (nonzero) digits is 22118400, while the sum is 58.

The spelling of 1616485648405 in words is "one trillion, six hundred sixteen billion, four hundred eighty-five million, six hundred forty-eight thousand, four hundred five".