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68102431527 = 3131746216193
BaseRepresentation
bin111111011011001110…
…001010001100100111
320111210011201222021210
4333123032022030213
52103433210302102
651141423242503
74630433055024
oct773316121447
9214704658253
1068102431527
1126978057869
1211247449433
136564285780
1434209c254b
151b88c3336c
hexfdb38a327

68102431527 has 8 divisors (see below), whose sum is σ = 97788106864. Its totient is φ = 41909188608.

The previous prime is 68102431489. The next prime is 68102431609. The reversal of 68102431527 is 72513420186.

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

It is not a de Polignac number, because 68102431527 - 230 = 67028689703 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1746216193 = 68102431527 / (6 + 8 + 1 + 0 + 2 + 4 + 3 + 1 + 5 + 2 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68102433527) 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, 873108058 + ... + 873108135.

It is an arithmetic number, because the mean of its divisors is an integer number (12223513358).

Almost surely, 268102431527 is an apocalyptic number.

68102431527 is a deficient number, since it is larger than the sum of its proper divisors (29685675337).

68102431527 is a wasteful number, since it uses less digits than its factorization.

68102431527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746216209.

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 68102431527 in words is "sixty-eight billion, one hundred two million, four hundred thirty-one thousand, five hundred twenty-seven".

Divisors: 1 3 13 39 1746216193 5238648579 22700810509 68102431527