1616580145920 has 288 divisors, whose sum is σ = 5468857067520. Its totient is φ = 405566586880.

The previous prime is 1616580145907. The next prime is 1616580145951. The reversal of 1616580145920 is 295410856161.

It is a super-2 number, since 2×1616580145920² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1616580145920.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 306225841 + ... + 306231119.

It is an arithmetic number, because the mean of its divisors is an integer number (18989087040).

Almost surely, 2^{1616580145920} is an apocalyptic number.

1616580145920 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 1616580145920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2734428533760).

1616580145920 is an abundant number, since it is smaller than the sum of its proper divisors (3852276921600).

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

1616580145920 is a wasteful number, since it uses less digits than its factorization.

1616580145920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011 (or 9997 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 48.

The spelling of 1616580145920 in words is "one trillion, six hundred sixteen billion, five hundred eighty million, one hundred forty-five thousand, nine hundred twenty".