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108215408418 = 23131977042523
BaseRepresentation
bin110010011001000100…
…1000001011100100010
3101100022201101022221120
41210302021001130202
53233111121032133
6121414035433110
710550451536355
oct1446211013442
9340281338846
10108215408418
1141991860037
1218b81155796
13a287873360
14534819c29c
152c355d4ab3
hex1932241722

108215408418 has 32 divisors (see below), whose sum is σ = 234262518336. Its totient is φ = 33128023488.

The previous prime is 108215408401. The next prime is 108215408419. The reversal of 108215408418 is 814804512801.

108215408418 is digitally balanced in base 3, 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 108215408418.

It is not an unprimeable number, because it can be changed into a prime (108215408419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3505896 + ... + 3536627.

It is an arithmetic number, because the mean of its divisors is an integer number (7320703698).

Almost surely, 2108215408418 is an apocalyptic number.

108215408418 is an abundant number, since it is smaller than the sum of its proper divisors (126047109918).

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

108215408418 is a wasteful number, since it uses less digits than its factorization.

108215408418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7042738.

The product of its (nonzero) digits is 81920, while the sum is 42.

The spelling of 108215408418 in words is "one hundred eight billion, two hundred fifteen million, four hundred eight thousand, four hundred eighteen".

Divisors: 1 2 3 6 13 26 39 78 197 394 591 1182 2561 5122 7683 15366 7042523 14085046 21127569 42255138 91552799 183105598 274658397 549316794 1387377031 2774754062 4162131093 8324262186 18035901403 36071802806 54107704209 108215408418