857555465616 has 120 divisors (see below), whose sum is σ = 2482739158016. Its totient is φ = 276032655360.

The previous prime is 857555465561. The next prime is 857555465651. The reversal of 857555465616 is 616564555758.

857555465616 is a `hidden beast` number, since 8 + 5 + 7 + 5 + 5 + 5 + 4 + 6 + 5 + 616 = 666.

857555465616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1859376 + ... + 2274288.

Almost surely, 2^857555465616 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 857555465616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1241369579008).

857555465616 is an abundant number, since it is smaller than the sum of its proper divisors (1625183692400).

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

857555465616 is a wasteful number, since it uses less digits than its factorization.

857555465616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415421 (or 415412 counting only the distinct ones).

The product of its digits is 151200000, while the sum is 63.

The spelling of 857555465616 in words is "eight hundred fifty-seven billion, five hundred fifty-five million, four hundred sixty-five thousand, six hundred sixteen".