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68170896986 = 288673844079
BaseRepresentation
bin111111011111010011…
…010101011001011010
320111221221120101020112
4333133103111121122
52104103222200421
651152310524322
74632224030543
oct773723253132
9214857511215
1068170896986
1126a0276a995
12112663666a2
13657550798a
143429b254ca
151b8ec5945b
hexfdf4d565a

68170896986 has 8 divisors (see below), whose sum is σ = 102267904320. Its totient is φ = 34081595548.

The previous prime is 68170896979. The next prime is 68170897063. The reversal of 68170896986 is 68969807186.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1904306 + ... + 1939773.

It is an arithmetic number, because the mean of its divisors is an integer number (12783488040).

Almost surely, 268170896986 is an apocalyptic number.

68170896986 is a deficient number, since it is larger than the sum of its proper divisors (34097007334).

68170896986 is a wasteful number, since it uses less digits than its factorization.

68170896986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3852948.

The product of its (nonzero) digits is 62705664, while the sum is 68.

The spelling of 68170896986 in words is "sixty-eight billion, one hundred seventy million, eight hundred ninety-six thousand, nine hundred eighty-six".

Divisors: 1 2 8867 17734 3844079 7688158 34085448493 68170896986