1616485065920 has 112 divisors (see below), whose sum is σ = 3903019473600. Its totient is φ = 637567451136.

The previous prime is 1616485065913. The next prime is 1616485065929. The reversal of 1616485065920 is 295605846161.

It is a super-2 number, since 2×1616485065920² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1616485065929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123871556 + ... + 123884604.

Almost surely, 2^{1616485065920} is an apocalyptic number.

1616485065920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1616485065920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1951509736800).

1616485065920 is an abundant number, since it is smaller than the sum of its proper divisors (2286534407680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1616485065920 is a wasteful number, since it uses less digits than its factorization.

1616485065920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18442 (or 18432 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 53.

The spelling of 1616485065920 in words is "one trillion, six hundred sixteen billion, four hundred eighty-five million, sixty-five thousand, nine hundred twenty".