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68537085486 = 23234397112951
BaseRepresentation
bin111111110101001000…
…001110111000101110
320112220110121200102120
4333311020032320232
52110330443213421
651252511333410
74644261420522
oct776510167056
9215813550376
1068537085486
1127080441811
1211348b21266
13660333b46c
143462607d82
151bb1e8e8c6
hexff520ee2e

68537085486 has 32 divisors (see below), whose sum is σ = 143067714048. Its totient is φ = 21847240800.

The previous prime is 68537085481. The next prime is 68537085493. The reversal of 68537085486 is 68458073586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68537085481) 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, 550311 + ... + 663261.

It is an arithmetic number, because the mean of its divisors is an integer number (4470866064).

Almost surely, 268537085486 is an apocalyptic number.

68537085486 is an abundant number, since it is smaller than the sum of its proper divisors (74530628562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68537085486 is a wasteful number, since it uses less digits than its factorization.

68537085486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117376.

The product of its (nonzero) digits is 38707200, while the sum is 60.

The spelling of 68537085486 in words is "sixty-eight billion, five hundred thirty-seven million, eighty-five thousand, four hundred eighty-six".

Divisors: 1 2 3 6 23 46 69 138 4397 8794 13191 26382 101131 112951 202262 225902 303393 338853 606786 677706 2597873 5195746 7793619 15587238 496645547 993291094 1489936641 2979873282 11422847581 22845695162 34268542743 68537085486