863781111232 has 56 divisors (see below), whose sum is σ = 1846048327200. Its totient is φ = 398639809536.

The previous prime is 863781111187. The next prime is 863781111233. The reversal of 863781111232 is 232111187368.

It is a super-2 number, since 2×863781111232² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863781111233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15646494 + ... + 15701602.

It is an arithmetic number, because the mean of its divisors is an integer number (32965148700).

Almost surely, 2^863781111232 is an apocalyptic number.

It is an amenable number.

863781111232 is an abundant number, since it is smaller than the sum of its proper divisors (982267215968).

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

863781111232 is a wasteful number, since it uses less digits than its factorization.

863781111232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73973 (or 73963 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The spelling of 863781111232 in words is "eight hundred sixty-three billion, seven hundred eighty-one million, one hundred eleven thousand, two hundred thirty-two".