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68064306415 = 5722313016703
BaseRepresentation
bin111111011000111100…
…101110010011101111
320111200112000000110121
4333120330232103233
52103343430301130
651133542145411
74626461026060
oct773074562357
9214615000417
1068064306415
1126958587906
1211236722267
1365593c7431
1434198da567
151b85701d7a
hexfd8f2e4ef

68064306415 has 32 divisors (see below), whose sum is σ = 93849993216. Its totient is φ = 46420732800.

The previous prime is 68064306383. The next prime is 68064306469. The reversal of 68064306415 is 51460346086.

It is a happy number.

It is not a de Polignac number, because 68064306415 - 25 = 68064306383 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10150954 + ... + 10157656.

It is an arithmetic number, because the mean of its divisors is an integer number (2932812288).

Almost surely, 268064306415 is an apocalyptic number.

68064306415 is a deficient number, since it is larger than the sum of its proper divisors (25785686801).

68064306415 is a wasteful number, since it uses less digits than its factorization.

68064306415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8239.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 68064306415 in words is "sixty-eight billion, sixty-four million, three hundred six thousand, four hundred fifteen".

Divisors: 1 5 7 35 223 1115 1301 1561 6505 6703 7805 9107 33515 45535 46921 234605 290123 1450615 1494769 2030861 7473845 8720603 10154305 10463383 43603015 52316915 61044221 305221105 1944694469 9723472345 13612861283 68064306415