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85875573673 = 128966621857
BaseRepresentation
bin100111111111010010…
…1010100001110101001
322012122211001010211201
41033332211110032221
52401333121324143
6103241203324201
76130035222001
oct1177645241651
9265584033751
1085875573673
113346858259a
1214787680661
1381374b7026
144229239001
15237922964d
hex13fe9543a9

85875573673 has 4 divisors (see below), whose sum is σ = 85942196820. Its totient is φ = 85808950528.

The previous prime is 85875573653. The next prime is 85875573683. The reversal of 85875573673 is 37637557858.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37637557858 = 218818778929.

It can be written as a sum of positive squares in 2 ways, for example, as 27235561024 + 58640012649 = 165032^2 + 242157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-85875573673 is a prime.

It is a super-2 number, since 2×858755736732 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85875573643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33309640 + ... + 33312217.

It is an arithmetic number, because the mean of its divisors is an integer number (21485549205).

Almost surely, 285875573673 is an apocalyptic number.

It is an amenable number.

85875573673 is a deficient number, since it is larger than the sum of its proper divisors (66623147).

85875573673 is a wasteful number, since it uses less digits than its factorization.

85875573673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66623146.

The product of its digits is 148176000, while the sum is 64.

The spelling of 85875573673 in words is "eighty-five billion, eight hundred seventy-five million, five hundred seventy-three thousand, six hundred seventy-three".

Divisors: 1 1289 66621857 85875573673