857297320120 has 32 divisors (see below), whose sum is σ = 1937197613520. Its totient is φ = 341447169280.

The previous prime is 857297320081. The next prime is 857297320123. The reversal of 857297320120 is 21023792758.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857297320123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45983026 + ... + 46001665.

Almost surely, 2^857297320120 is an apocalyptic number.

It is an amenable number.

857297320120 is an abundant number, since it is smaller than the sum of its proper divisors (1079900293400).

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

857297320120 is a wasteful number, since it uses less digits than its factorization.

857297320120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91984935 (or 91984931 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 857297320120 in words is "eight hundred fifty-seven billion, two hundred ninety-seven million, three hundred twenty thousand, one hundred twenty".