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68523572793 = 3136121287047
BaseRepresentation
bin111111110100010100…
…101011111000111001
320112212112012011111110
4333310110223320321
52110314013312133
651251305550533
74644035521104
oct776424537071
9215775164443
1068523572793
11270738524a5
12113444a5449
1366005b9aa0
1434608cb73b
151bb0bc0c63
hexff452be39

68523572793 has 16 divisors (see below), whose sum is σ = 98409239936. Its totient is φ = 42161316480.

The previous prime is 68523572743. The next prime is 68523572797. The reversal of 68523572793 is 39727532586.

It is not a de Polignac number, because 68523572793 - 221 = 68521475641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68523572797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95196 + ... + 382242.

It is an arithmetic number, because the mean of its divisors is an integer number (6150577496).

Almost surely, 268523572793 is an apocalyptic number.

It is an amenable number.

68523572793 is a deficient number, since it is larger than the sum of its proper divisors (29885667143).

68523572793 is a wasteful number, since it uses less digits than its factorization.

68523572793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293184.

The product of its digits is 19051200, while the sum is 57.

The spelling of 68523572793 in words is "sixty-eight billion, five hundred twenty-three million, five hundred seventy-two thousand, seven hundred ninety-three".

Divisors: 1 3 13 39 6121 18363 79573 238719 287047 861141 3731611 11194833 1757014687 5271044061 22841190931 68523572793