863497821312 has 96 divisors (see below), whose sum is σ = 2839777087680. Its totient is φ = 246713660928.

The previous prime is 863497821301. The next prime is 863497821317. The reversal of 863497821312 is 213128794368.

It is a happy number.

863497821312 is a `hidden beast` number, since 8 + 6 + 349 + 78 + 213 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (863497821317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53532228 + ... + 53548355.

It is an arithmetic number, because the mean of its divisors is an integer number (29581011330).

Almost surely, 2^863497821312 is an apocalyptic number.

It is an amenable number.

863497821312 is an abundant number, since it is smaller than the sum of its proper divisors (1976279266368).

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

863497821312 is a wasteful number, since it uses less digits than its factorization.

863497821312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107080610 (or 107080595 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 863497821312 in words is "eight hundred sixty-three billion, four hundred ninety-seven million, eight hundred twenty-one thousand, three hundred twelve".