863434938624 has 72 divisors (see below), whose sum is σ = 2299770543840. Its totient is φ = 287589408768.

The previous prime is 863434938623. The next prime is 863434938629. The reversal of 863434938624 is 426839434368.

It is not an unprimeable number, because it can be changed into a prime (863434938623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562687 + ... + 1429505.

Almost surely, 2^863434938624 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 863434938624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1149885271920).

863434938624 is an abundant number, since it is smaller than the sum of its proper divisors (1436335605216).

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

863434938624 is a wasteful number, since it uses less digits than its factorization.

863434938624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868135 (or 868121 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 60.

The spelling of 863434938624 in words is "eight hundred sixty-three billion, four hundred thirty-four million, nine hundred thirty-eight thousand, six hundred twenty-four".