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87696709013 = 731201324781
BaseRepresentation
bin101000110101100100…
…0011001010110010101
322101100201211101212202
41101223020121112111
52414100324142023
6104142020454245
76223130504324
oct1215310312625
9271321741782
1087696709013
1134212562521
1214bb554a385
1383678971c4
14435d0540bb
15243405a128
hex146b219595

87696709013 has 4 divisors (see below), whose sum is σ = 88898033868. Its totient is φ = 86495384160.

The previous prime is 87696709003. The next prime is 87696709019. The reversal of 87696709013 is 31090769678.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21556699684 + 66140009329 = 146822^2 + 257177^2 .

It is a cyclic number.

It is not a de Polignac number, because 87696709013 - 234 = 70516839829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87696709013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87696709019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 600662318 + ... + 600662463.

It is an arithmetic number, because the mean of its divisors is an integer number (22224508467).

Almost surely, 287696709013 is an apocalyptic number.

It is an amenable number.

87696709013 is a deficient number, since it is larger than the sum of its proper divisors (1201324855).

87696709013 is a wasteful number, since it uses less digits than its factorization.

87696709013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201324854.

The product of its (nonzero) digits is 3429216, while the sum is 56.

The spelling of 87696709013 in words is "eighty-seven billion, six hundred ninety-six million, seven hundred nine thousand, thirteen".

Divisors: 1 73 1201324781 87696709013