848939261640 has 128 divisors (see below), whose sum is σ = 2658893091840. Its totient is φ = 216431511296.

The previous prime is 848939261593. The next prime is 848939261657. The reversal of 848939261640 is 46162939848.

It is a Cunningham number, because it is equal to 921379²-1.

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

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 5451499 + ... + 5605061.

It is an arithmetic number, because the mean of its divisors is an integer number (20772602280).

Almost surely, 2^848939261640 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 848939261640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1329446545920).

848939261640 is an abundant number, since it is smaller than the sum of its proper divisors (1809953830200).

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

848939261640 is a wasteful number, since it uses less digits than its factorization.

848939261640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155603 (or 155599 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 60.

The spelling of 848939261640 in words is "eight hundred forty-eight billion, nine hundred thirty-nine million, two hundred sixty-one thousand, six hundred forty".