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680775682048 = 21171141711483
BaseRepresentation
bin10011110100000010110…
…01001000100000000000
32102002012102112212012221
421322001121020200000
542123212033311143
61240424413300424
7100120153551220
oct11720131104000
92362172485187
10680775682048
11242796141020
12abb32494714
134c2736ac587
1424d42058080
1512a964ad2ed
hex9e81648800

680775682048 has 384 divisors, whose sum is σ = 1764171601920. Its totient is φ = 254951424000.

The previous prime is 680775681959. The next prime is 680775682049. The reversal of 680775682048 is 840286577086.

It is not an unprimeable number, because it can be changed into a prime (680775682049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 459052315 + ... + 459053797.

It is an arithmetic number, because the mean of its divisors is an integer number (4594196880).

Almost surely, 2680775682048 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 680775682048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (882085800960).

680775682048 is an abundant number, since it is smaller than the sum of its proper divisors (1083395919872).

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

680775682048 is a wasteful number, since it uses less digits than its factorization.

680775682048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635 (or 1615 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 61.

The spelling of 680775682048 in words is "six hundred eighty billion, seven hundred seventy-five million, six hundred eighty-two thousand, forty-eight".