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68466824745 = 35111193347821
BaseRepresentation
bin111111110000111100…
…001101011000101001
320112201120102001210220
4333300330031120221
52110210001342440
651241521400253
74642446256644
oct776074153051
9215646361726
1068466824745
1127044812890
1211329499089
1365c190b067
143457158a5b
151baac118d0
hexff0f0d629

68466824745 has 32 divisors (see below), whose sum is σ = 119606246784. Its totient is φ = 33168115200.

The previous prime is 68466824669. The next prime is 68466824747. The reversal of 68466824745 is 54742866486.

It is a happy number.

It is not a de Polignac number, because 68466824745 - 27 = 68466824617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68466824747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22935 + ... + 370755.

It is an arithmetic number, because the mean of its divisors is an integer number (3737695212).

Almost surely, 268466824745 is an apocalyptic number.

It is an amenable number.

68466824745 is a deficient number, since it is larger than the sum of its proper divisors (51139422039).

68466824745 is a wasteful number, since it uses less digits than its factorization.

68466824745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349033.

The product of its digits is 61931520, while the sum is 60.

The spelling of 68466824745 in words is "sixty-eight billion, four hundred sixty-six million, eight hundred twenty-four thousand, seven hundred forty-five".

Divisors: 1 3 5 11 15 33 55 165 1193 3579 5965 13123 17895 39369 65615 196845 347821 1043463 1739105 3826031 5217315 11478093 19130155 57390465 414950453 1244851359 2074752265 4564454983 6224256795 13693364949 22822274915 68466824745