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67488875397 = 3218793990827
BaseRepresentation
bin111110110110101001…
…101000001110000101
320110012102020002111200
4332312221220032011
52101204123003042
651000504453113
74606302655446
oct766651501605
9213172202450
1067488875397
112669278aa89
12110b5a7a199
1364971217c8
1433a330b2cd
151b4ee38c4c
hexfb6a68385

67488875397 has 12 divisors (see below), whose sum is σ = 97535836320. Its totient is φ = 44968627368.

The previous prime is 67488875369. The next prime is 67488875449. The reversal of 67488875397 is 79357888476.

67488875397 is a `hidden beast` number, since 6 + 7 + 4 + 8 + 8 + 87 + 539 + 7 = 666.

It is not a de Polignac number, because 67488875397 - 222 = 67484681093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67488875897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1978503 + ... + 2012324.

It is an arithmetic number, because the mean of its divisors is an integer number (8127986360).

Almost surely, 267488875397 is an apocalyptic number.

It is an amenable number.

67488875397 is a deficient number, since it is larger than the sum of its proper divisors (30046960923).

67488875397 is a wasteful number, since it uses less digits than its factorization.

67488875397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3992712 (or 3992709 counting only the distinct ones).

The product of its digits is 568995840, while the sum is 72.

The spelling of 67488875397 in words is "sixty-seven billion, four hundred eighty-eight million, eight hundred seventy-five thousand, three hundred ninety-seven".

Divisors: 1 3 9 1879 5637 16911 3990827 11972481 35917443 7498763933 22496291799 67488875397