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13164565992 = 23311326318457
BaseRepresentation
bin11000100001010101…
…10101010111101000
31020222110110020120020
430100222311113220
5203430112102432
610014150200440
7644141651604
oct142052652750
936873406506
1013164565992
115646066306
122674953120
13131a500826
148cc566504
15520b0c22c
hex310ab55e8

13164565992 has 64 divisors (see below), whose sum is σ = 33330718080. Its totient is φ = 4332582912.

The previous prime is 13164565991. The next prime is 13164566011. The reversal of 13164565992 is 29956546131.

It is not an unprimeable number, because it can be changed into a prime (13164565991) 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, 704028 + ... + 722484.

It is an arithmetic number, because the mean of its divisors is an integer number (520792470).

Almost surely, 213164565992 is an apocalyptic number.

13164565992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13164565992 is an abundant number, since it is smaller than the sum of its proper divisors (20166152088).

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

13164565992 is a wasteful number, since it uses less digits than its factorization.

13164565992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18842 (or 18838 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 51.

The spelling of 13164565992 in words is "thirteen billion, one hundred sixty-four million, five hundred sixty-five thousand, nine hundred ninety-two".

Divisors: 1 2 3 4 6 8 12 24 113 226 263 339 452 526 678 789 904 1052 1356 1578 2104 2712 3156 6312 18457 29719 36914 55371 59438 73828 89157 110742 118876 147656 178314 221484 237752 356628 442968 713256 2085641 4171282 4854191 6256923 8342564 9708382 12513846 14562573 16685128 19416764 25027692 29125146 38833528 50055384 58250292 116500584 548523583 1097047166 1645570749 2194094332 3291141498 4388188664 6582282996 13164565992