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68320176825 = 352910935691
BaseRepresentation
bin111111101000001100…
…110010101010111001
320112100100110120200110
4333220030302222321
52104404431124300
651215202254533
74636015630665
oct775014625271
9215310416613
1068320176825
1126a79a6005a
12112a8357449
13659a413b44
1434418a38a5
151b9cde5550
hexfe8332ab9

68320176825 has 12 divisors (see below), whose sum is σ = 112956025808. Its totient is φ = 36437427600.

The previous prime is 68320176811. The next prime is 68320176829. The reversal of 68320176825 is 52867102386.

It is not a de Polignac number, because 68320176825 - 29 = 68320176313 is a prime.

It is a super-2 number, since 2×683201768252 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68320176829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 455467771 + ... + 455467920.

Almost surely, 268320176825 is an apocalyptic number.

It is an amenable number.

68320176825 is a deficient number, since it is larger than the sum of its proper divisors (44635848983).

68320176825 is a wasteful number, since it uses less digits than its factorization.

68320176825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910935704 (or 910935699 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 68320176825 in words is "sixty-eight billion, three hundred twenty million, one hundred seventy-six thousand, eight hundred twenty-five".

Divisors: 1 3 5 15 25 75 910935691 2732807073 4554678455 13664035365 22773392275 68320176825