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68482170015 = 3574315167701
BaseRepresentation
bin111111110001110110…
…101111110010011111
320112202122021200120020
4333301312233302133
52110222413420030
651243230323223
74643023561230
oct776166576237
9215678250506
1068482170015
1127052443a26
1211332659513
1365c4b518bc
1434591d1087
151bac243510
hexff1dafc9f

68482170015 has 32 divisors (see below), whose sum is σ = 128136746496. Its totient is φ = 30578083200.

The previous prime is 68482170013. The next prime is 68482170077. The reversal of 68482170015 is 51007128486.

It is not a de Polignac number, because 68482170015 - 21 = 68482170013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68482170013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7579336 + ... + 7588365.

It is an arithmetic number, because the mean of its divisors is an integer number (4004273328).

Almost surely, 268482170015 is an apocalyptic number.

68482170015 is a deficient number, since it is larger than the sum of its proper divisors (59654576481).

68482170015 is a wasteful number, since it uses less digits than its factorization.

68482170015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15167759.

The product of its (nonzero) digits is 107520, while the sum is 42.

The spelling of 68482170015 in words is "sixty-eight billion, four hundred eighty-two million, one hundred seventy thousand, fifteen".

Divisors: 1 3 5 7 15 21 35 43 105 129 215 301 645 903 1505 4515 15167701 45503103 75838505 106173907 227515515 318521721 530869535 652211143 1592608605 1956633429 3261055715 4565478001 9783167145 13696434003 22827390005 68482170015