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12319788668 = 22117913212683
BaseRepresentation
bin10110111100101000…
…10000111001111100
31011210120212002221012
423132110100321330
5200212331214133
65354251454352
7614203322135
oct133624207174
934716762835
1012319788668
115252221630
122479a573b8
1312144a07a5
1484c2a2c8c
154c188cb48
hex2de510e7c

12319788668 has 48 divisors (see below), whose sum is σ = 23844226560. Its totient is φ = 5522774400.

The previous prime is 12319788641. The next prime is 12319788673. The reversal of 12319788668 is 86688791321.

It is a happy number.

Its product of digits (6967296) is a multiple of the sum of its prime divisors (4096).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4590455 + ... + 4593137.

It is an arithmetic number, because the mean of its divisors is an integer number (496754720).

Almost surely, 212319788668 is an apocalyptic number.

It is an amenable number.

12319788668 is a deficient number, since it is larger than the sum of its proper divisors (11524437892).

12319788668 is a wasteful number, since it uses less digits than its factorization.

12319788668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4098 (or 4096 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 59.

It can be divided in two parts, 123 and 19788668, that added together give a palindrome (19788791).

The spelling of 12319788668 in words is "twelve billion, three hundred nineteen million, seven hundred eighty-eight thousand, six hundred sixty-eight".

Divisors: 1 2 4 11 22 44 79 158 316 869 1321 1738 2642 2683 3476 5284 5366 10732 14531 29062 29513 58124 59026 104359 118052 208718 211957 417436 423914 847828 1147949 2295898 2331527 3544243 4591796 4663054 7088486 9326108 14176972 38986673 77973346 155946692 279995197 559990394 1119980788 3079947167 6159894334 12319788668