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64053890880 = 2635737733529
BaseRepresentation
bin111011101001111010…
…001100111101000000
320010100000200210120220
4323221322030331000
52022140244002010
645232001103040
74425213042360
oct735172147500
9203300623526
1064053890880
112518a82a301
12104b7627a80
13606a599ca5
1431590349a0
1519ed5c0970
hexee9e8cf40

64053890880 has 448 divisors, whose sum is σ = 242044362240. Its totient is φ = 14046068736.

The previous prime is 64053890837. The next prime is 64053890897. The reversal of 64053890880 is 8809835046.

It is a tau number, because it is divible by the number of its divisors (448).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18148956 + ... + 18152484.

Almost surely, 264053890880 is an apocalyptic number.

64053890880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64053890880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121022181120).

64053890880 is an abundant number, since it is smaller than the sum of its proper divisors (177990471360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64053890880 is a wasteful number, since it uses less digits than its factorization.

64053890880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3666 (or 3656 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 51.

The spelling of 64053890880 in words is "sixty-four billion, fifty-three million, eight hundred ninety thousand, eight hundred eighty".