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68461290184 = 2371222523039
BaseRepresentation
bin111111110000100111…
…000110001011001000
320112201011222212211011
4333300213012023020
52110202042241214
651241203013304
74642351236130
oct776047061310
9215634885734
1068461290184
1127041682671
121132766a234
1365c0720b81
143456517ac0
151baa4bbac4
hexff09c62c8

68461290184 has 16 divisors (see below), whose sum is σ = 146702764800. Its totient is φ = 29340552912.

The previous prime is 68461290169. The next prime is 68461290197. The reversal of 68461290184 is 48109216486.

It is a happy number.

68461290184 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611261464 + ... + 611261575.

It is an arithmetic number, because the mean of its divisors is an integer number (9168922800).

Almost surely, 268461290184 is an apocalyptic number.

It is an amenable number.

68461290184 is an abundant number, since it is smaller than the sum of its proper divisors (78241474616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68461290184 is a wasteful number, since it uses less digits than its factorization.

68461290184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222523052 (or 1222523048 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 49.

The spelling of 68461290184 in words is "sixty-eight billion, four hundred sixty-one million, two hundred ninety thousand, one hundred eighty-four".

Divisors: 1 2 4 7 8 14 28 56 1222523039 2445046078 4890092156 8557661273 9780184312 17115322546 34230645092 68461290184