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68712658124 = 221124127123911
BaseRepresentation
bin111111111111100101…
…111111010011001100
320120100200222200210212
4333333211333103030
52111210420024444
651322142421552
74651522646225
oct777745772314
9216320880725
1068712658124
1127160560070
12113978918b8
1366308220b6
14347ba6c24c
151bc25c119e
hexfff97f4cc

68712658124 has 48 divisors (see below), whose sum is σ = 132214612992. Its totient is φ = 30987360000.

The previous prime is 68712658121. The next prime is 68712658211. The reversal of 68712658124 is 42185621786.

It is not an unprimeable number, because it can be changed into a prime (68712658121) 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, 2861729 + ... + 2885639.

It is an arithmetic number, because the mean of its divisors is an integer number (2754471104).

Almost surely, 268712658124 is an apocalyptic number.

It is an amenable number.

68712658124 is a deficient number, since it is larger than the sum of its proper divisors (63501954868).

68712658124 is a wasteful number, since it uses less digits than its factorization.

68712658124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24438 (or 24436 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 50.

The spelling of 68712658124 in words is "sixty-eight billion, seven hundred twelve million, six hundred fifty-eight thousand, one hundred twenty-four".

Divisors: 1 2 4 11 22 44 241 271 482 542 964 1084 2651 2981 5302 5962 10604 11924 23911 47822 65311 95644 130622 261244 263021 526042 718421 1052084 1436842 2873684 5762551 6479881 11525102 12959762 23050204 25919524 63388061 71278691 126776122 142557382 253552244 285114764 1561651321 3123302642 6246605284 17178164531 34356329062 68712658124