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860681634159401 = 3359256231507639
BaseRepresentation
bin1100001110110010010000111…
…1000100011001101100101001
311011212102100201220211210000022
43003230210033010121230221
51400302401441321100101
612250303403450050225
7346201124145514235
oct30354441704315451
94155370656753008
10860681634159401
1122a27003861712a
1280645a49a19975
132ac32c11b42302
14112772db6715c5
156978487846a1b
hex30ec90f119b29

860681634159401 has 4 divisors (see below), whose sum is σ = 860937865670400. Its totient is φ = 860425402648404.

The previous prime is 860681634159341. The next prime is 860681634159469. The reversal of 860681634159401 is 104951436186068.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-860681634159401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (860681634159001) by changing a digit.

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, 128115750461 + ... + 128115757178.

It is an arithmetic number, because the mean of its divisors is an integer number (215234466417600).

Almost surely, 2860681634159401 is an apocalyptic number.

It is an amenable number.

860681634159401 is a deficient number, since it is larger than the sum of its proper divisors (256231510999).

860681634159401 is a wasteful number, since it uses less digits than its factorization.

860681634159401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256231510998.

The product of its (nonzero) digits is 29859840, while the sum is 62.

The spelling of 860681634159401 in words is "eight hundred sixty trillion, six hundred eighty-one billion, six hundred thirty-four million, one hundred fifty-nine thousand, four hundred one".

Divisors: 1 3359 256231507639 860681634159401