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68071426319 = 1330697170579
BaseRepresentation
bin111111011001010111…
…111000100100001111
320111201000101202010202
4333121113320210033
52103402241120234
651134354524115
74626605401601
oct773127704417
9214630352122
1068071426319
1126961600126
1211238b9663b
13655aa1b0b0
14341a831171
151b8615b77e
hexfd95f890f

68071426319 has 8 divisors (see below), whose sum is σ = 73310507760. Its totient is φ = 62832747456.

The previous prime is 68071426307. The next prime is 68071426411. The reversal of 68071426319 is 91362417086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68071426319 - 232 = 63776459023 is a prime.

It is a super-2 number, since 2×680714263192 (a number of 22 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 (68071428319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313772 + ... + 484350.

It is an arithmetic number, because the mean of its divisors is an integer number (9163813470).

Almost surely, 268071426319 is an apocalyptic number.

68071426319 is a deficient number, since it is larger than the sum of its proper divisors (5239081441).

68071426319 is a wasteful number, since it uses less digits than its factorization.

68071426319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201289.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 68071426319 in words is "sixty-eight billion, seventy-one million, four hundred twenty-six thousand, three hundred nineteen".

Divisors: 1 13 30697 170579 399061 2217527 5236263563 68071426319