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680334771380 = 225115952414081
BaseRepresentation
bin10011110011001110001…
…11001100010010110100
32102001001200220021111012
421321213013030102310
542121311200141010
61240312543131352
7100103221066325
oct11714707142264
92361050807435
10680334771380
1124258a273340
12aba2a8a3b58
134c203245aa4
1424cdd68444c
1512a6c918005
hex9e671cc4b4

680334771380 has 48 divisors (see below), whose sum is σ = 1585001839680. Its totient is φ = 243201331200.

The previous prime is 680334771377. The next prime is 680334771421. The reversal of 680334771380 is 83177433086.

680334771380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×6803347713802 (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26194061 + ... + 26220020.

It is an arithmetic number, because the mean of its divisors is an integer number (33020871660).

Almost surely, 2680334771380 is an apocalyptic number.

It is an amenable number.

680334771380 is an abundant number, since it is smaller than the sum of its proper divisors (904667068300).

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

680334771380 is a wasteful number, since it uses less digits than its factorization.

680334771380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52414160 (or 52414158 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 50.

The spelling of 680334771380 in words is "six hundred eighty billion, three hundred thirty-four million, seven hundred seventy-one thousand, three hundred eighty".

Divisors: 1 2 4 5 10 11 20 22 44 55 59 110 118 220 236 295 590 649 1180 1298 2596 3245 6490 12980 52414081 104828162 209656324 262070405 524140810 576554891 1048281620 1153109782 2306219564 2882774455 3092430779 5765548910 6184861558 11531097820 12369723116 15462153895 30924307790 34016738569 61848615580 68033477138 136066954276 170083692845 340167385690 680334771380