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67889068445 = 5111234346699
BaseRepresentation
bin111111001110100000…
…001111100110011101
320111020022021000011102
4333032200033212131
52103014100142240
651104322202445
74622232363152
oct771640174635
9214208230142
1067889068445
1126878677a40
12111a7ab3425
13652bcccc23
143400522229
151b75139815
hexfce80f99d

67889068445 has 8 divisors (see below), whose sum is σ = 88872962400. Its totient is φ = 49373867920.

The previous prime is 67889068441. The next prime is 67889068451. The reversal of 67889068445 is 54486098876.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 67889068445 - 22 = 67889068441 is a prime.

It is a super-2 number, since 2×678890684452 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67889068441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 617173295 + ... + 617173404.

It is an arithmetic number, because the mean of its divisors is an integer number (11109120300).

Almost surely, 267889068445 is an apocalyptic number.

It is an amenable number.

67889068445 is a deficient number, since it is larger than the sum of its proper divisors (20983893955).

67889068445 is a wasteful number, since it uses less digits than its factorization.

67889068445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234346715.

The product of its (nonzero) digits is 92897280, while the sum is 65.

The spelling of 67889068445 in words is "sixty-seven billion, eight hundred eighty-nine million, sixty-eight thousand, four hundred forty-five".

Divisors: 1 5 11 55 1234346699 6171733495 13577813689 67889068445