857161047456 has 144 divisors (see below), whose sum is σ = 2838335520384. Its totient is φ = 240282312192.

The previous prime is 857161047427. The next prime is 857161047481. The reversal of 857161047456 is 654740161758.

857161047456 is a `hidden beast` number, since 8 + 5 + 7 + 161 + 0 + 474 + 5 + 6 = 666.

857161047456 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-3 number, since 3×857161047456³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 3904276 + ... + 4117971.

It is an arithmetic number, because the mean of its divisors is an integer number (19710663336).

Almost surely, 2^857161047456 is an apocalyptic number.

It is an amenable number.

857161047456 is an abundant number, since it is smaller than the sum of its proper divisors (1981174472928).

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

857161047456 is a wasteful number, since it uses less digits than its factorization.

857161047456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8022323 (or 8022312 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 54.

The spelling of 857161047456 in words is "eight hundred fifty-seven billion, one hundred sixty-one million, forty-seven thousand, four hundred fifty-six".