863786049720 has 512 divisors, whose sum is σ = 2970576322560. Its totient is φ = 199035648000.

The previous prime is 863786049701. The next prime is 863786049757. The reversal of 863786049720 is 27940687368.

It is a super-2 number, since 2×863786049720² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 669082275 + ... + 669083565.

It is an arithmetic number, because the mean of its divisors is an integer number (5801906880).

Almost surely, 2^863786049720 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 863786049720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1485288161280).

863786049720 is an abundant number, since it is smaller than the sum of its proper divisors (2106790272840).

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

863786049720 is a wasteful number, since it uses less digits than its factorization.

863786049720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627 (or 1623 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 60.

The spelling of 863786049720 in words is "eight hundred sixty-three billion, seven hundred eighty-six million, forty-nine thousand, seven hundred twenty".