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78132687014 = 2173683224929
BaseRepresentation
bin100100011000100010…
…0100011000010100110
321110200012102202010202
41020301010203002212
52240003431441024
655521010350502
75434125611264
oct1106104430246
9243605382122
1078132687014
1130154957208
121318658b432
1374a23072a5
143ad2b7d434
1520745babae
hex12311230a6

78132687014 has 8 divisors (see below), whose sum is σ = 117200226360. Its totient is φ = 39065944896.

The previous prime is 78132687001. The next prime is 78132687041. The reversal of 78132687014 is 41078623187.

It is a happy number.

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

It is a super-2 number, since 2×781326870142 (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 78132687014.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234902 + ... + 459830.

It is an arithmetic number, because the mean of its divisors is an integer number (14650028295).

Almost surely, 278132687014 is an apocalyptic number.

78132687014 is a deficient number, since it is larger than the sum of its proper divisors (39067539346).

78132687014 is a wasteful number, since it uses less digits than its factorization.

78132687014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398614.

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 78132687014 in words is "seventy-eight billion, one hundred thirty-two million, six hundred eighty-seven thousand, fourteen".

Divisors: 1 2 173683 224929 347366 449858 39066343507 78132687014