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68041912075 = 5215785320323
BaseRepresentation
bin111111010111100111…
…010010111100001011
320111121221212021012121
4333113213102330023
52103322212141300
651131422152111
74626066465334
oct772747227413
9214557767177
1068041912075
1126946981695
121122b122637
136554886247
14341694b28b
151b8377b81a
hexfd79d2f0b

68041912075 has 24 divisors (see below), whose sum is σ = 85013097008. Its totient is φ = 54020753280.

The previous prime is 68041912061. The next prime is 68041912091. The reversal of 68041912075 is 57021914086.

It is not a de Polignac number, because 68041912075 - 27 = 68041911947 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3337864 + ... + 3358186.

Almost surely, 268041912075 is an apocalyptic number.

68041912075 is a deficient number, since it is larger than the sum of its proper divisors (16971184933).

68041912075 is a wasteful number, since it uses less digits than its factorization.

68041912075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21343 (or 21338 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 68041912075 in words is "sixty-eight billion, forty-one million, nine hundred twelve thousand, seventy-five".

Divisors: 1 5 25 157 785 853 3925 4265 20323 21325 101615 133921 508075 669605 3190711 3348025 15953555 17335519 79767775 86677595 433387975 2721676483 13608382415 68041912075