1616835109680 has 1600 divisors, whose sum is σ = 7077470822400. Its totient is φ = 333773291520.

The previous prime is 1616835109639. The next prime is 1616835109739. The reversal of 1616835109680 is 869015386161.

1616835109680 is a `hidden beast` number, since 1 + 6 + 1 + 68 + 3 + 510 + 9 + 68 + 0 = 666.

It is a super-2 number, since 2×1616835109680² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 1950343506 + ... + 1950344334.

It is an arithmetic number, because the mean of its divisors is an integer number (4423419264).

Almost surely, 2^{1616835109680} is an apocalyptic number.

1616835109680 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 1616835109680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3538735411200).

1616835109680 is an abundant number, since it is smaller than the sum of its proper divisors (5460635712720).

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

1616835109680 is a wasteful number, since it uses less digits than its factorization.

1616835109680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984 (or 969 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 1616835109680 in words is "one trillion, six hundred sixteen billion, eight hundred thirty-five million, one hundred nine thousand, six hundred eighty".