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11910980890 = 2531791393499
BaseRepresentation
bin10110001011111001…
…10010010100011010
31010202002121112002101
423011330302110122
5143343202342030
65245525354014
7601110444544
oct130574622432
933662545071
1011910980890
115062490266
122384b6890a
13117a8971b3
1480dc88694
1549aa397ca
hex2c5f3251a

11910980890 has 64 divisors (see below), whose sum is σ = 22579200000. Its totient is φ = 4518296640.

The previous prime is 11910980867. The next prime is 11910980897. The reversal of 11910980890 is 9808901911.

11910980890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11910980890.

It is not an unprimeable number, because it can be changed into a prime (11910980897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3402361 + ... + 3405859.

It is an arithmetic number, because the mean of its divisors is an integer number (352800000).

Almost surely, 211910980890 is an apocalyptic number.

11910980890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11910980890 is a deficient number, since it is larger than the sum of its proper divisors (10668219110).

11910980890 is a wasteful number, since it uses less digits than its factorization.

11910980890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3755.

The product of its (nonzero) digits is 46656, while the sum is 46.

The spelling of 11910980890 in words is "eleven billion, nine hundred ten million, nine hundred eighty thousand, eight hundred ninety".

Divisors: 1 2 5 10 31 62 79 139 155 158 278 310 395 695 790 1390 2449 3499 4309 4898 6998 8618 10981 12245 17495 21545 21962 24490 34990 43090 54905 108469 109810 216938 276421 340411 486361 542345 552842 680822 972722 1084690 1382105 1702055 2431805 2764210 3404110 4863610 8569051 15077191 17138102 30154382 38422519 42845255 75385955 76845038 85690510 150771910 192112595 384225190 1191098089 2382196178 5955490445 11910980890