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12519231084 = 22323111217949
BaseRepresentation
bin10111010100011010…
…00100111001101100
31012022111010211111100
423222031010321230
5201114410343314
65430134323100
7622144464663
oct135215047154
935274124440
1012519231084
115344863678
1225147b9490
1312468c1059
1486a97bdda
154d4136c09
hex2ea344e6c

12519231084 has 36 divisors (see below), whose sum is σ = 32666670400. Its totient is φ = 4038461280.

The previous prime is 12519231077. The next prime is 12519231149. The reversal of 12519231084 is 48013291521.

12519231084 is a `hidden beast` number, since 1 + 251 + 92 + 310 + 8 + 4 = 666.

12519231084 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×125192310842 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 5607859 + ... + 5610090.

Almost surely, 212519231084 is an apocalyptic number.

It is an amenable number.

12519231084 is an abundant number, since it is smaller than the sum of its proper divisors (20147439316).

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

12519231084 is a wasteful number, since it uses less digits than its factorization.

12519231084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11217990 (or 11217985 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 12519231084 in words is "twelve billion, five hundred nineteen million, two hundred thirty-one thousand, eighty-four".

Divisors: 1 2 3 4 6 9 12 18 31 36 62 93 124 186 279 372 558 1116 11217949 22435898 33653847 44871796 67307694 100961541 134615388 201923082 347756419 403846164 695512838 1043269257 1391025676 2086538514 3129807771 4173077028 6259615542 12519231084