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68250886455 = 3512491364267
BaseRepresentation
bin111111100100000100…
…011110000100110111
320112011112002021011110
4333210010132010313
52104234211331310
651204245210103
74634214651153
oct774404360467
9215145067143
1068250886455
1126a43934194
1211289100933
136588c6331b
1434365c8063
151b96ca9d20
hexfe411e137

68250886455 has 16 divisors (see below), whose sum is σ = 109210460544. Its totient is φ = 36397458720.

The previous prime is 68250886453. The next prime is 68250886463. The reversal of 68250886455 is 55468805286.

It is not a de Polignac number, because 68250886455 - 21 = 68250886453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68250886395 and 68250886404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68250886453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5232 + ... + 369498.

It is an arithmetic number, because the mean of its divisors is an integer number (6825653784).

Almost surely, 268250886455 is an apocalyptic number.

68250886455 is a deficient number, since it is larger than the sum of its proper divisors (40959574089).

68250886455 is a wasteful number, since it uses less digits than its factorization.

68250886455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376766.

The product of its (nonzero) digits is 18432000, while the sum is 57.

The spelling of 68250886455 in words is "sixty-eight billion, two hundred fifty million, eight hundred eighty-six thousand, four hundred fifty-five".

Divisors: 1 3 5 15 12491 37473 62455 187365 364267 1092801 1821335 5464005 4550059097 13650177291 22750295485 68250886455