Search a number
-
+
680251840775 = 52139721578171
BaseRepresentation
bin10011110011000100010…
…10110101100100000111
32102000211220211222002022
421321202022311210013
542121123432401100
61240300421433355
7100101163146203
oct11714212654407
92360756758068
10680251840775
11242547480351
12aba06b6b85b
134c1bbcca820
1424cd2657b03
1512a654d5e85
hex9e622b5907

680251840775 has 24 divisors (see below), whose sum is σ = 917762811504. Its totient is φ = 497161036800.

The previous prime is 680251840753. The next prime is 680251840799. The reversal of 680251840775 is 577048152086.

It is not a de Polignac number, because 680251840775 - 224 = 680235063559 is a prime.

It is a Duffinian number.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 10757561 + ... + 10820610.

It is an arithmetic number, because the mean of its divisors is an integer number (38240117146).

Almost surely, 2680251840775 is an apocalyptic number.

680251840775 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

680251840775 is a deficient number, since it is larger than the sum of its proper divisors (237510970729).

680251840775 is a wasteful number, since it uses less digits than its factorization.

680251840775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21578291 (or 21578286 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 53.

The spelling of 680251840775 in words is "six hundred eighty billion, two hundred fifty-one million, eight hundred forty thousand, seven hundred seventy-five".

Divisors: 1 5 13 25 65 97 325 485 1261 2425 6305 31525 21578171 107890855 280516223 539454275 1402581115 2093082587 7012905575 10465412935 27210073631 52327064675 136050368155 680251840775