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13123301132345 = 531712836453379
BaseRepresentation
bin1011111011111000000110…
…1100111100100000111001
31201110120112102100001000212
42332332001230330200321
53210003010042213340
643524432235440505
72523061431053345
oct276760154744071
951416472301025
1013123301132345
1141aa619402468
12157b472bb6135
137426a2a60321
14335257960625
1517b579365a65
hexbef81b3c839

13123301132345 has 16 divisors (see below), whose sum is σ = 15809954967360. Its totient is φ = 10457363473344.

The previous prime is 13123301132311. The next prime is 13123301132443. The reversal of 13123301132345 is 54323110332131.

It is a cyclic number.

It is not a de Polignac number, because 13123301132345 - 28 = 13123301132089 is a prime.

It is a super-2 number, since 2×131233011323452 (a number of 27 digits) contains 22 as substring.

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, 1193135 + ... + 5260244.

It is an arithmetic number, because the mean of its divisors is an integer number (988122185460).

Almost surely, 213123301132345 is an apocalyptic number.

It is an amenable number.

13123301132345 is a deficient number, since it is larger than the sum of its proper divisors (2686653835015).

13123301132345 is a wasteful number, since it uses less digits than its factorization.

13123301132345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6454984.

The product of its (nonzero) digits is 19440, while the sum is 32.

Adding to 13123301132345 its reverse (54323110332131), we get a palindrome (67446411464476).

The spelling of 13123301132345 in words is "thirteen trillion, one hundred twenty-three billion, three hundred one million, one hundred thirty-two thousand, three hundred forty-five".

Divisors: 1 5 317 1283 1585 6415 406711 2033555 6453379 32266895 2045721143 8279685257 10228605715 41398426285 2624660226469 13123301132345