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255103045215431 = 72315711008587501
BaseRepresentation
bin111010000000001111001110…
…011001000010010011000111
31020110020121112211122202121212
4322000033032121002103013
5231414102014033343211
62302320415432002035
7104506405162501520
oct7200171631022307
91213217484582555
10255103045215431
1174313659557466
122474081983031b
13ac4616343b76a
1446dd0a624b847
151e75c37b8138b
hexe803ce6424c7

255103045215431 has 16 divisors (see below), whose sum is σ = 304415914203648. Its totient is φ = 209019673500000.

The previous prime is 255103045215329. The next prime is 255103045215461. The reversal of 255103045215431 is 134512540301552.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-255103045215431 is a prime.

It is a super-2 number, since 2×2551030452154312 (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255103045215461) 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, 504040820 + ... + 504546681.

It is an arithmetic number, because the mean of its divisors is an integer number (19025994637728).

Almost surely, 2255103045215431 is an apocalyptic number.

255103045215431 is a deficient number, since it is larger than the sum of its proper divisors (49312868988217).

255103045215431 is a wasteful number, since it uses less digits than its factorization.

255103045215431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008589102.

The product of its (nonzero) digits is 360000, while the sum is 41.

Adding to 255103045215431 its reverse (134512540301552), we get a palindrome (389615585516983).

The spelling of 255103045215431 in words is "two hundred fifty-five trillion, one hundred three billion, forty-five million, two hundred fifteen thousand, four hundred thirty-one".

Divisors: 1 7 23 161 1571 10997 36133 252931 1008587501 7060112507 23197512523 162382587661 1584490964071 11091436748497 36443292173633 255103045215431