856521331022 has 8 divisors (see below), whose sum is σ = 1468322281776. Its totient is φ = 367080570432.

The previous prime is 856521330997. The next prime is 856521331027. The reversal of 856521331022 is 220133125658.

856521331022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856521331027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30590047523 + ... + 30590047550.

It is an arithmetic number, because the mean of its divisors is an integer number (183540285222).

Almost surely, 2^856521331022 is an apocalyptic number.

856521331022 is a deficient number, since it is larger than the sum of its proper divisors (611800950754).

856521331022 is a wasteful number, since it uses less digits than its factorization.

856521331022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61180095082.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 856521331022 in words is "eight hundred fifty-six billion, five hundred twenty-one million, three hundred thirty-one thousand, twenty-two".