849683756640 has 288 divisors, whose sum is σ = 2790273534048. Its totient is φ = 217319424000.

The previous prime is 849683756639. The next prime is 849683756651. The reversal of 849683756640 is 46657386948.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52116490 + ... + 52132790.

It is an arithmetic number, because the mean of its divisors is an integer number (9688449771).

Almost surely, 2^849683756640 is an apocalyptic number.

849683756640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 849683756640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1395136767024).

849683756640 is an abundant number, since it is smaller than the sum of its proper divisors (1940589777408).

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

849683756640 is a wasteful number, since it uses less digits than its factorization.

849683756640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16494 (or 16455 counting only the distinct ones).

The product of its (nonzero) digits is 209018880, while the sum is 66.

The spelling of 849683756640 in words is "eight hundred forty-nine billion, six hundred eighty-three million, seven hundred fifty-six thousand, six hundred forty".