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68393331284 = 22431073716221
BaseRepresentation
bin111111101100100011…
…110110101001010100
320112112110010012201212
4333230203312221110
52110032143100114
651230334240552
74640564503205
oct775443665124
9215473105655
1068393331284
1127007286093
1211308956158
1365ac6183c5
14344b4a75ac
151ba4545b3e
hexfec8f6a54

68393331284 has 24 divisors (see below), whose sum is σ = 123616408608. Its totient is φ = 33089222880.

The previous prime is 68393331269. The next prime is 68393331311. The reversal of 68393331284 is 48213339386.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1839707 + ... + 1876514.

It is an arithmetic number, because the mean of its divisors is an integer number (5150683692).

Almost surely, 268393331284 is an apocalyptic number.

It is an amenable number.

68393331284 is a deficient number, since it is larger than the sum of its proper divisors (55223077324).

68393331284 is a wasteful number, since it uses less digits than its factorization.

68393331284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3716375 (or 3716373 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 50.

The spelling of 68393331284 in words is "sixty-eight billion, three hundred ninety-three million, three hundred thirty-one thousand, two hundred eighty-four".

Divisors: 1 2 4 43 86 107 172 214 428 4601 9202 18404 3716221 7432442 14864884 159797503 319595006 397635647 639190012 795271294 1590542588 17098332821 34196665642 68393331284