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68464654911 = 32431090916217
BaseRepresentation
bin111111110000110011…
…111011101000111111
320112201102022211100200
4333300303323220333
52110203422424121
651241403054543
74642421651622
oct776063735077
9215642284320
1068464654911
1127043570634
1211328811453
1365c132b533
143456b51db9
151baa933a26
hexff0cfba3f

68464654911 has 24 divisors (see below), whose sum is σ = 101208753360. Its totient is φ = 44574800256.

The previous prime is 68464654903. The next prime is 68464654919. The reversal of 68464654911 is 11945646486.

68464654911 is a `hidden beast` number, since 6 + 8 + 46 + 46 + 549 + 11 = 666.

It is an interprime number because it is at equal distance from previous prime (68464654903) and next prime (68464654919).

It is not a de Polignac number, because 68464654911 - 23 = 68464654903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68464654919) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4213675 + ... + 4229891.

It is an arithmetic number, because the mean of its divisors is an integer number (4217031390).

Almost surely, 268464654911 is an apocalyptic number.

68464654911 is a deficient number, since it is larger than the sum of its proper divisors (32744098449).

68464654911 is a wasteful number, since it uses less digits than its factorization.

68464654911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27175 (or 27172 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The spelling of 68464654911 in words is "sixty-eight billion, four hundred sixty-four million, six hundred fifty-four thousand, nine hundred eleven".

Divisors: 1 3 9 43 129 387 10909 16217 32727 48651 98181 145953 469087 697331 1407261 2091993 4221783 6275979 176911253 530733759 1592201277 7607183879 22821551637 68464654911