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21838201318386 = 2324129591058697
BaseRepresentation
bin1001111011100100110100…
…01110110110101111110010
32212022201012210112201022100
410331302122032312233302
510330244114014142021
6114240155311521230
74412520662310015
oct475623216665762
985281183481270
1021838201318386
116a5a590361632
122548481529216
13c25444a6053b
14556d9038537c
1527d0dd52d626
hex13dc9a3b6bf2

21838201318386 has 24 divisors (see below), whose sum is σ = 48470154147324. Its totient is φ = 7101854087040.

The previous prime is 21838201318363. The next prime is 21838201318429. The reversal of 21838201318386 is 68381310283812.

21838201318386 is a `hidden beast` number, since 2 + 1 + 8 + 382 + 0 + 1 + 3 + 183 + 86 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16889066956161 + 4949134362225 = 4109631^2 + 2224665^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14795528611 + ... + 14795530086.

Almost surely, 221838201318386 is an apocalyptic number.

21838201318386 is an abundant number, since it is smaller than the sum of its proper divisors (26631952828938).

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

21838201318386 is a wasteful number, since it uses less digits than its factorization.

21838201318386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29591058746 (or 29591058743 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 21838201318386 in words is "twenty-one trillion, eight hundred thirty-eight billion, two hundred one million, three hundred eighteen thousand, three hundred eighty-six".

Divisors: 1 2 3 6 9 18 41 82 123 246 369 738 29591058697 59182117394 88773176091 177546352182 266319528273 532639056546 1213233406577 2426466813154 3639700219731 7279400439462 10919100659193 21838201318386