Search a number
-
+
8691930164457 = 3210957131155087
BaseRepresentation
bin111111001111011111101…
…1010001110110011101001
31010202221101120001200100100
41332132333122032303221
52114402033110230312
630253003444500013
71554654063242361
oct176367732166351
933687346050310
108691930164457
112851254a85a61
12b846799aa609
134b0851209287
14220997cdb9a1
1510116c82a5dc
hex7e7bf68ece9

8691930164457 has 24 divisors (see below), whose sum is σ = 12670497290880. Its totient is φ = 5741320940640.

The previous prime is 8691930164447. The next prime is 8691930164459. The reversal of 8691930164457 is 7544610391968.

8691930164457 is a `hidden beast` number, since 8 + 6 + 9 + 19 + 3 + 0 + 164 + 457 = 666.

It is not a de Polignac number, because 8691930164457 - 226 = 8691863055593 is a prime.

It is a super-2 number, since 2×86919301644572 (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8691930164394 and 8691930164403.

It is not an unprimeable number, because it can be changed into a prime (8691930164459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55967968 + ... + 56123054.

It is an arithmetic number, because the mean of its divisors is an integer number (527937387120).

Almost surely, 28691930164457 is an apocalyptic number.

It is an amenable number.

8691930164457 is a deficient number, since it is larger than the sum of its proper divisors (3978567126423).

8691930164457 is a wasteful number, since it uses less digits than its factorization.

8691930164457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212333 (or 212330 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 8691930164457 in words is "eight trillion, six hundred ninety-one billion, nine hundred thirty million, one hundred sixty-four thousand, four hundred fifty-seven".

Divisors: 1 3 9 109 327 981 57131 155087 171393 465261 514179 1395783 6227279 16904483 18681837 50713449 56045511 152140347 8860275397 26580826191 79742478573 965770018273 2897310054819 8691930164457