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68619724335475 = 52171543910457813
BaseRepresentation
bin11111001101000110001100…
…10010110010100101110011
322222221222111120110000221021
433212203012102302211303
532443231143412213400
6401535244405440311
720311416511044145
oct1746430622624563
9288858446400837
1068619724335475
111a956509525035
127842b66a10097
132c39a7364a571
1412d32d8aa4c95
157dee532ed71a
hex3e68c64b2973

68619724335475 has 24 divisors (see below), whose sum is σ = 90099505673280. Its totient is φ = 51663264529920.

The previous prime is 68619724335431. The next prime is 68619724335497. The reversal of 68619724335475 is 57453342791686.

It is not a de Polignac number, because 68619724335475 - 211 = 68619724333427 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1332669 + ... + 11790481.

It is an arithmetic number, because the mean of its divisors is an integer number (3754146069720).

Almost surely, 268619724335475 is an apocalyptic number.

68619724335475 is a deficient number, since it is larger than the sum of its proper divisors (21479781337805).

68619724335475 is a wasteful number, since it uses less digits than its factorization.

68619724335475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10473279 (or 10473274 counting only the distinct ones).

The product of its digits is 914457600, while the sum is 70.

The spelling of 68619724335475 in words is "sixty-eight trillion, six hundred nineteen billion, seven hundred twenty-four million, three hundred thirty-five thousand, four hundred seventy-five".

Divisors: 1 5 17 25 85 425 15439 77195 262463 385975 1312315 6561575 10457813 52289065 177782821 261445325 888914105 4444570525 161458174907 807290874535 2744788973419 4036454372675 13723944867095 68619724335475