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68387862313 = 353523370427
BaseRepresentation
bin111111101100001110…
…111111011100101001
320112112001211100201101
4333230032333130221
52110024243043223
651230021121401
74640500144531
oct775416773451
9215461740641
1068387862313
1127004190181
1211306b59261
1365ab452024
14344a8824c1
151ba3d154ad
hexfec3bf729

68387862313 has 8 divisors (see below), whose sum is σ = 68712912288. Its totient is φ = 68063554944.

The previous prime is 68387862299. The next prime is 68387862343. The reversal of 68387862313 is 31326878386.

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 68387862313 - 213 = 68387854121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68387862343) 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, 595 + ... + 369832.

It is an arithmetic number, because the mean of its divisors is an integer number (8589114036).

Almost surely, 268387862313 is an apocalyptic number.

It is an amenable number.

68387862313 is a deficient number, since it is larger than the sum of its proper divisors (325049975).

68387862313 is a wasteful number, since it uses less digits than its factorization.

68387862313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371303.

The product of its digits is 6967296, while the sum is 55.

The spelling of 68387862313 in words is "sixty-eight billion, three hundred eighty-seven million, eight hundred sixty-two thousand, three hundred thirteen".

Divisors: 1 353 523 184619 370427 130760731 193733321 68387862313