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68171949484 = 2217042987371
BaseRepresentation
bin111111011111010111…
…010110010110101100
320111222000112211222221
4333133113112112230
52104104004340414
651152345245124
74632236003212
oct773727262654
9214860484887
1068171949484
1126a03319721
12112667937a4
1365757b5a62
143429d1acb2
151b8edb6224
hexfdf5d65ac

68171949484 has 6 divisors (see below), whose sum is σ = 119300911604. Its totient is φ = 34085974740.

The previous prime is 68171949473. The next prime is 68171949493. The reversal of 68171949484 is 48494917186.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8521493682 + ... + 8521493689.

Almost surely, 268171949484 is an apocalyptic number.

It is an amenable number.

68171949484 is a deficient number, since it is larger than the sum of its proper divisors (51128962120).

68171949484 is a wasteful number, since it uses less digits than its factorization.

68171949484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17042987375 (or 17042987373 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 61.

The spelling of 68171949484 in words is "sixty-eight billion, one hundred seventy-one million, nine hundred forty-nine thousand, four hundred eighty-four".

Divisors: 1 2 4 17042987371 34085974742 68171949484