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68875687570 = 2589499155087
BaseRepresentation
bin100000000100101001…
…1111001011010010010
320120210001202110011111
41000021103321122102
52112024134000240
651350245003534
74655542453564
oct1001123713222
9216701673144
1068875687570
1127234591548
12114223b35aa
136658533721
143495589334
151bd1a761ea
hex10094f9692

68875687570 has 32 divisors (see below), whose sum is σ = 125621280000. Its totient is φ = 27185955456.

The previous prime is 68875687519. The next prime is 68875687571. The reversal of 68875687570 is 7578657886.

It is a junction number, because it is equal to n+sod(n) for n = 68875687496 and 68875687505.

It is not an unprimeable number, because it can be changed into a prime (68875687571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 366567 + ... + 521653.

It is an arithmetic number, because the mean of its divisors is an integer number (3925665000).

Almost surely, 268875687570 is an apocalyptic number.

68875687570 is a deficient number, since it is larger than the sum of its proper divisors (56745592430).

68875687570 is a wasteful number, since it uses less digits than its factorization.

68875687570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155682.

The product of its (nonzero) digits is 158054400, while the sum is 67.

The spelling of 68875687570 in words is "sixty-eight billion, eight hundred seventy-five million, six hundred eighty-seven thousand, five hundred seventy".

Divisors: 1 2 5 10 89 178 445 499 890 998 2495 4990 44411 88822 155087 222055 310174 444110 775435 1550870 13802743 27605486 69013715 77388413 138027430 154776826 386942065 773884130 6887568757 13775137514 34437843785 68875687570