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68493839486 = 22915131125147
BaseRepresentation
bin111111110010100011…
…010000110001111110
320112210110020120001212
4333302203100301332
52110233410330421
651244324404422
74643225013062
oct776243206176
9215713216055
1068493839486
1127058a94416
1211336546712
1365c73a9307
14345a98baa2
151bad29ae5b
hexff28d0c7e

68493839486 has 32 divisors (see below), whose sum is σ = 107335687680. Its totient is φ = 32740092000.

The previous prime is 68493839473. The next prime is 68493839489.

68493839486 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68493839489) 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, 2711165 + ... + 2736311.

It is an arithmetic number, because the mean of its divisors is an integer number (3354240240).

Almost surely, 268493839486 is an apocalyptic number.

68493839486 is a deficient number, since it is larger than the sum of its proper divisors (38841848194).

68493839486 is a wasteful number, since it uses less digits than its factorization.

68493839486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25640.

The product of its digits is 214990848, while the sum is 68.

The spelling of 68493839486 in words is "sixty-eight billion, four hundred ninety-three million, eight hundred thirty-nine thousand, four hundred eighty-six".

Divisors: 1 2 29 58 151 302 311 622 4379 8758 9019 18038 25147 46961 50294 93922 729263 1361869 1458526 2723738 3797197 7594394 7820717 15641434 110118713 220237426 226800793 453601586 1180928267 2361856534 34246919743 68493839486