863446384280 has 128 divisors (see below), whose sum is σ = 1983559311360. Its totient is φ = 338198784000.

The previous prime is 863446384223. The next prime is 863446384303. The reversal of 863446384280 is 82483644368.

It is a super-2 number, since 2×863446384280² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 294992177 + ... + 294995103.

It is an arithmetic number, because the mean of its divisors is an integer number (15496557120).

Almost surely, 2^863446384280 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 863446384280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (991779655680).

863446384280 is an abundant number, since it is smaller than the sum of its proper divisors (1120112927080).

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

863446384280 is a wasteful number, since it uses less digits than its factorization.

863446384280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3681 (or 3677 counting only the distinct ones).

The product of its (nonzero) digits is 21233664, while the sum is 56.

The spelling of 863446384280 in words is "eight hundred sixty-three billion, four hundred forty-six million, three hundred eighty-four thousand, two hundred eighty".