616172016816 has 280 divisors, whose sum is σ = 1836942178176. Its totient is φ = 200014894080.

The previous prime is 616172016791. The next prime is 616172016821. The reversal of 616172016816 is 618610271616.

616172016816 is a `hidden beast` number, since 6 + 1 + 617 + 2 + 0 + 16 + 8 + 16 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 412706566 + ... + 412708058.

Almost surely, 2^616172016816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 616172016816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (918471089088).

616172016816 is an abundant number, since it is smaller than the sum of its proper divisors (1220770161360).

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

616172016816 is a wasteful number, since it uses less digits than its factorization.

616172016816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2423 (or 2402 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 616172016816 in words is "six hundred sixteen billion, one hundred seventy-two million, sixteen thousand, eight hundred sixteen".