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68481650625 = 35436523547
BaseRepresentation
bin111111110001110100…
…110000111111000001
320112202121022022002120
4333301310300333001
52110222300310000
651243211234453
74643016266043
oct776164607701
9215677268076
1068481650625
1127052119783
1211332448a29
1365c49cc37b
1434590d7a93
151bac18e6a0
hexff1d30fc1

68481650625 has 20 divisors (see below), whose sum is σ = 114099563952. Its totient is φ = 36523546000.

The previous prime is 68481650599. The next prime is 68481650639. The reversal of 68481650625 is 52605618486.

It is not a de Polignac number, because 68481650625 - 29 = 68481650113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18259899 + ... + 18263648.

Almost surely, 268481650625 is an apocalyptic number.

It is an amenable number.

68481650625 is a deficient number, since it is larger than the sum of its proper divisors (45617913327).

68481650625 is an equidigital number, since it uses as much as digits as its factorization.

68481650625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36523570 (or 36523555 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 51.

The spelling of 68481650625 in words is "sixty-eight billion, four hundred eighty-one million, six hundred fifty thousand, six hundred twenty-five".

Divisors: 1 3 5 15 25 75 125 375 625 1875 36523547 109570641 182617735 547853205 913088675 2739266025 4565443375 13696330125 22827216875 68481650625