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17968592068 = 22717191986797
BaseRepresentation
bin10000101111000000…
…101111010011000100
31201101021002001102221
4100233000233103010
5243244424421233
612131001142124
71204164340540
oct205700572304
951337061387
1017968592068
117690890199
12359578a944
1319048847cb
14c265b2a20
1570275242d
hex42f02f4c4

17968592068 has 48 divisors (see below), whose sum is σ = 40053847680. Its totient is φ = 6866366976.

The previous prime is 17968592027. The next prime is 17968592071. The reversal of 17968592068 is 86029586971.

It is a junction number, because it is equal to n+sod(n) for n = 17968591997 and 17968592015.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 984355 + ... + 1002442.

It is an arithmetic number, because the mean of its divisors is an integer number (834455160).

Almost surely, 217968592068 is an apocalyptic number.

It is an amenable number.

17968592068 is an abundant number, since it is smaller than the sum of its proper divisors (22085255612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17968592068 is a wasteful number, since it uses less digits than its factorization.

17968592068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986844 (or 1986842 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 61.

The spelling of 17968592068 in words is "seventeen billion, nine hundred sixty-eight million, five hundred ninety-two thousand, sixty-eight".

Divisors: 1 2 4 7 14 17 19 28 34 38 68 76 119 133 238 266 323 476 532 646 1292 2261 4522 9044 1986797 3973594 7947188 13907579 27815158 33775549 37749143 55630316 67551098 75498286 135102196 150996572 236428843 264244001 472857686 528488002 641735431 945715372 1056976004 1283470862 2566941724 4492148017 8984296034 17968592068