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64068819253 = 787152353453
BaseRepresentation
bin111011101010110011…
…001001100100110101
320010101001210020110121
4323222303021210311
52022203104204003
645233253051541
74425453656335
oct735263114465
9203331706417
1064068819253
11251981a61aa
1210500626bb1
1360706c5b4a
14315addd0c5
1519eea6dcbd
hexeeacc9935

64068819253 has 8 divisors (see below), whose sum is σ = 64193550048. Its totient is φ = 63944199984.

The previous prime is 64068819229. The next prime is 64068819257. The reversal of 64068819253 is 35291886046.

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

It is a cyclic number.

It is not a de Polignac number, because 64068819253 - 213 = 64068811061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64068819253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64068819257) 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, 1171875 + ... + 1225327.

It is an arithmetic number, because the mean of its divisors is an integer number (8024193756).

Almost surely, 264068819253 is an apocalyptic number.

It is an amenable number.

64068819253 is a deficient number, since it is larger than the sum of its proper divisors (124730795).

64068819253 is a wasteful number, since it uses less digits than its factorization.

64068819253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55763.

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 64068819253 in words is "sixty-four billion, sixty-eight million, eight hundred nineteen thousand, two hundred fifty-three".

Divisors: 1 787 1523 53453 1198601 42067511 81408919 64068819253