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11880370068 = 2237243469877
BaseRepresentation
bin10110001000010000…
…00000111110010100
31010122222000022221020
423010020000332110
5143312333320233
65242513321140
7600256323300
oct130410007624
933588008836
1011880370068
115047182966
1223768661b0
13117443a198
14809b9ad00
15497ede9b3
hex2c4200f94

11880370068 has 72 divisors (see below), whose sum is σ = 32996712672. Its totient is φ = 3315445056.

The previous prime is 11880370063. The next prime is 11880370091. The reversal of 11880370068 is 86007308811.

It is a super-2 number, since 2×118803700682 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11880370063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209655 + ... + 260222.

It is an arithmetic number, because the mean of its divisors is an integer number (458287676).

Almost surely, 211880370068 is an apocalyptic number.

It is an amenable number.

11880370068 is an abundant number, since it is smaller than the sum of its proper divisors (21116342604).

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

11880370068 is a wasteful number, since it uses less digits than its factorization.

11880370068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469941 (or 469932 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

Adding to 11880370068 its reverse (86007308811), we get a palindrome (97887678879).

The spelling of 11880370068 in words is "eleven billion, eight hundred eighty million, three hundred seventy thousand, sixty-eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 43 49 84 86 98 129 147 172 196 258 294 301 516 588 602 903 1204 1806 2107 3612 4214 6321 8428 12642 25284 469877 939754 1409631 1879508 2819262 3289139 5638524 6578278 9867417 13156556 19734834 20204711 23023973 39469668 40409422 46047946 60614133 69071919 80818844 92095892 121228266 138143838 141432977 242456532 276287676 282865954 424298931 565731908 848597862 990030839 1697195724 1980061678 2970092517 3960123356 5940185034 11880370068