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168130281319 = 72111323994617
BaseRepresentation
bin1001110010010101011…
…0000111111101100111
3121001222021210020021021
42130211112013331213
510223312323000234
6205123223232011
715101265545200
oct2344526077547
9531867706237
10168130281319
1165338184920
12287025a8607
1312b15796580
1481cd6125a7
15459061e9b4
hex2725587f67

168130281319 has 24 divisors (see below), whose sum is σ = 229772461968. Its totient is φ = 120932864640.

The previous prime is 168130281289. The next prime is 168130281331. The reversal of 168130281319 is 913182031861.

It is not a de Polignac number, because 168130281319 - 211 = 168130279271 is a prime.

It is a super-2 number, since 2×1681302813192 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168130281379) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11990302 + ... + 12004315.

It is an arithmetic number, because the mean of its divisors is an integer number (9573852582).

Almost surely, 2168130281319 is an apocalyptic number.

168130281319 is a deficient number, since it is larger than the sum of its proper divisors (61642180649).

168130281319 is a wasteful number, since it uses less digits than its factorization.

168130281319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23994655 (or 23994648 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The spelling of 168130281319 in words is "one hundred sixty-eight billion, one hundred thirty million, two hundred eighty-one thousand, three hundred nineteen".

Divisors: 1 7 11 13 49 77 91 143 539 637 1001 7007 23994617 167962319 263940787 311930021 1175736233 1847585509 2183510147 3431230231 12933098563 15284571029 24018611617 168130281319