872117444483784 has 192 divisors, whose sum is σ = 2490350846256000. Its totient is φ = 285874558986240.

The previous prime is 872117444483777. The next prime is 872117444483797. The reversal of 872117444483784 is 487384444711278.

872117444483784 is a `hidden beast` number, since 8 + 7 + 2 + 1 + 1 + 74 + 4 + 4 + 483 + 78 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45569752 + ... + 61812920.

It is an arithmetic number, because the mean of its divisors is an integer number (12970577324250).

Almost surely, 2^{872117444483784} 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 872117444483784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1245175423128000).

872117444483784 is an abundant number, since it is smaller than the sum of its proper divisors (1618233401772216).

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

872117444483784 is a wasteful number, since it uses less digits than its factorization.

872117444483784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16243650 (or 16243634 counting only the distinct ones).

The product of its digits is 1078984704, while the sum is 72.

The spelling of 872117444483784 in words is "eight hundred seventy-two trillion, one hundred seventeen billion, four hundred forty-four million, four hundred eighty-three thousand, seven hundred eighty-four".