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68214669154 = 2359719132137
BaseRepresentation
bin111111100001111010…
…010011111101100010
320112001222221020100221
4333201322103331202
52104200423403104
651200513033254
74633265056312
oct774172237542
9215058836327
1068214669154
1126a25447635
1211278b5582a
1365815c2478
14343187b442
151b93a03c54
hexfe1e93f62

68214669154 has 16 divisors (see below), whose sum is σ = 102750508800. Its totient is φ = 33964765984.

The previous prime is 68214669143. The next prime is 68214669199. The reversal of 68214669154 is 45196641286.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450174 + ... + 582310.

It is an arithmetic number, because the mean of its divisors is an integer number (6421906800).

Almost surely, 268214669154 is an apocalyptic number.

68214669154 is a deficient number, since it is larger than the sum of its proper divisors (34535839646).

68214669154 is a wasteful number, since it uses less digits than its factorization.

68214669154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133217.

The product of its digits is 2488320, while the sum is 52.

The spelling of 68214669154 in words is "sixty-eight billion, two hundred fourteen million, six hundred sixty-nine thousand, one hundred fifty-four".

Divisors: 1 2 359 718 719 1438 132137 258121 264274 516242 47437183 94874366 95006503 190013006 34107334577 68214669154