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135765210217 = 7132951445703
BaseRepresentation
bin111111001110000111…
…1001011010001101001
3110222102201012021021011
41332130033023101221
54211021343211332
6142211503343521
712544250150260
oct1763417132151
9428381167234
10135765210217
1152639a1597a
122238b5b1ba1
13ca58425120
1467dd03b5d7
1537e906de47
hex1f9c3cb469

135765210217 has 16 divisors (see below), whose sum is σ = 172857565440. Its totient is φ = 103714535232.

The previous prime is 135765210199. The next prime is 135765210233. The reversal of 135765210217 is 712012567531.

It is not a de Polignac number, because 135765210217 - 27 = 135765210089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135765210217.

It is not an unprimeable number, because it can be changed into a prime (135765210017) 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, 25720213 + ... + 25725490.

It is an arithmetic number, because the mean of its divisors is an integer number (10803597840).

Almost surely, 2135765210217 is an apocalyptic number.

It is an amenable number.

135765210217 is a deficient number, since it is larger than the sum of its proper divisors (37092355223).

135765210217 is a wasteful number, since it uses less digits than its factorization.

135765210217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51445752.

The product of its (nonzero) digits is 88200, while the sum is 40.

Adding to 135765210217 its reverse (712012567531), we get a palindrome (847777777748).

The spelling of 135765210217 in words is "one hundred thirty-five billion, seven hundred sixty-five million, two hundred ten thousand, two hundred seventeen".

Divisors: 1 7 13 29 91 203 377 2639 51445703 360119921 668794139 1491925387 4681558973 10443477709 19395030031 135765210217