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51501124305013 = 1271977727266401
BaseRepresentation
bin10111011010111000010100…
…01110000100000001110101
320202100110101220101000101211
423231130022032010001311
523222243300310230023
6301311142340521421
713563555604451635
oct1355341216040165
9222313356330354
1051501124305013
1115456560047479
12593931a3b0271
1322976c5a4a006
14ca094c2dc6c5
155e49e0a91a0d
hex2ed70a384075

51501124305013 has 16 divisors (see below), whose sum is σ = 52177078001664. Its totient is φ = 50829465254400.

The previous prime is 51501124305011. The next prime is 51501124305017. The reversal of 51501124305013 is 31050342110515.

It is a cyclic number.

It is not a de Polignac number, because 51501124305013 - 21 = 51501124305011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51501124305011) 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, 193188613 + ... + 193455013.

It is an arithmetic number, because the mean of its divisors is an integer number (3261067375104).

Almost surely, 251501124305013 is an apocalyptic number.

It is an amenable number.

51501124305013 is a deficient number, since it is larger than the sum of its proper divisors (675953696651).

51501124305013 is a wasteful number, since it uses less digits than its factorization.

51501124305013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274452.

The product of its (nonzero) digits is 9000, while the sum is 31.

Adding to 51501124305013 its reverse (31050342110515), we get a palindrome (82551466415528).

The spelling of 51501124305013 in words is "fifty-one trillion, five hundred one billion, one hundred twenty-four million, three hundred five thousand, thirteen".

Divisors: 1 127 197 7727 25019 266401 981329 1522219 33832927 52480997 193321813 2058480527 6665086619 261427026929 405520663819 51501124305013