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68263072485 = 3537199751823
BaseRepresentation
bin111111100100110010…
…111101001011100101
320112012101000101020220
4333210302331023211
52104300321304420
651205402314553
74634423354016
oct774462751345
9215171011226
1068263072485
1126a4a7a7793
12112911b8a59
13658b63bbaa
14343807b00d
151b97db5840
hexfe4cbd2e5

68263072485 has 64 divisors (see below), whose sum is σ = 113023795200. Its totient is φ = 35155296000.

The previous prime is 68263072477. The next prime is 68263072583. The reversal of 68263072485 is 58427036286.

It is not a de Polignac number, because 68263072485 - 23 = 68263072477 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 82943784 + ... + 82944606.

It is an arithmetic number, because the mean of its divisors is an integer number (1765996800).

Almost surely, 268263072485 is an apocalyptic number.

It is an amenable number.

68263072485 is a deficient number, since it is larger than the sum of its proper divisors (44760722715).

68263072485 is a wasteful number, since it uses less digits than its factorization.

68263072485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818.

The product of its (nonzero) digits is 3870720, while the sum is 51.

The spelling of 68263072485 in words is "sixty-eight billion, two hundred sixty-three million, seventy-two thousand, four hundred eighty-five".

Divisors: 1 3 5 15 37 111 185 199 555 597 751 823 995 2253 2469 2985 3755 4115 7363 11265 12345 22089 27787 30451 36815 83361 91353 110445 138935 149449 152255 163777 416805 448347 456765 491331 618073 747245 818885 1854219 2241735 2456655 3090365 5529613 6059749 9271095 16588839 18179247 22868701 27648065 30298745 68606103 82944195 90896235 114343505 122996527 343030515 368989581 614982635 1844947905 4550871499 13652614497 22754357495 68263072485