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68271299385 = 359774658567
BaseRepresentation
bin111111100101010010…
…010101101100111001
320112012221111100102220
4333211102111230321
52104304423040020
651210254514253
74634553320112
oct774522255471
9215187440386
1068271299385
1126a54406783
1211293b05989
13659025c693
1434391bd209
151b9898d240
hexfe5495b39

68271299385 has 16 divisors (see below), whose sum is σ = 109345908096. Its totient is φ = 36374083328.

The previous prime is 68271299357. The next prime is 68271299399. The reversal of 68271299385 is 58399217286.

It is a cyclic number.

It is not a de Polignac number, because 68271299385 - 26 = 68271299321 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2314629 + ... + 2343938.

It is an arithmetic number, because the mean of its divisors is an integer number (6834119256).

Almost surely, 268271299385 is an apocalyptic number.

It is an amenable number.

68271299385 is a deficient number, since it is larger than the sum of its proper divisors (41074608711).

68271299385 is a wasteful number, since it uses less digits than its factorization.

68271299385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4659552.

The product of its digits is 13063680, while the sum is 60.

The spelling of 68271299385 in words is "sixty-eight billion, two hundred seventy-one million, two hundred ninety-nine thousand, three hundred eighty-five".

Divisors: 1 3 5 15 977 2931 4885 14655 4658567 13975701 23292835 69878505 4551419959 13654259877 22757099795 68271299385