1616463304320 has 128 divisors (see below), whose sum is σ = 5156427003840. Its totient is φ = 430726406144.

The previous prime is 1616463304319. The next prime is 1616463304331. The reversal of 1616463304320 is 234033646161.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×1616463304320² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2187364 + ... + 2831516.

Almost surely, 2^{1616463304320} is an apocalyptic number.

1616463304320 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 1616463304320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2578213501920).

1616463304320 is an abundant number, since it is smaller than the sum of its proper divisors (3539963699520).

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

1616463304320 is a wasteful number, since it uses less digits than its factorization.

1616463304320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645482 (or 645470 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 39.

The spelling of 1616463304320 in words is "one trillion, six hundred sixteen billion, four hundred sixty-three million, three hundred four thousand, three hundred twenty".