871722798408 has 324 divisors, whose sum is σ = 3020852961945. Its totient is φ = 226263058560.

The previous prime is 871722798391. The next prime is 871722798469. The reversal of 871722798408 is 804897227178.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

871722798408 is a `hidden beast` number, since 8 + 71 + 72 + 2 + 7 + 98 + 408 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 654419517444 + 217303280964 = 808962^2 + 466158^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=660198.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 610022238 + ... + 610023666.

Almost surely, 2^871722798408 is an apocalyptic number.

871722798408 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 871722798408

871722798408 is an abundant number, since it is smaller than the sum of its proper divisors (2149130163537).

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

871722798408 is a wasteful number, since it uses less digits than its factorization.

871722798408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2906 (or 1452 counting only the distinct ones).

The product of its (nonzero) digits is 25288704, while the sum is 63.

The spelling of 871722798408 in words is "eight hundred seventy-one billion, seven hundred twenty-two million, seven hundred ninety-eight thousand, four hundred eight".