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64800455255 = 557722461163
BaseRepresentation
bin111100010110011010…
…000111101001010111
320012021001111012101022
4330112122013221113
52030202404032010
645434030351355
74452546532034
oct742632075127
9205231435338
1064800455255
1125533193158
121068565b55b
136159160a63
1431ca25038b
151a43dded55
hexf16687a57

64800455255 has 8 divisors (see below), whose sum is σ = 77895316752. Its totient is φ = 51750517248.

The previous prime is 64800455227. The next prime is 64800455261. The reversal of 64800455255 is 55255400846.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-64800455255 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11227697 + ... + 11233466.

It is an arithmetic number, because the mean of its divisors is an integer number (9736914594).

Almost surely, 264800455255 is an apocalyptic number.

64800455255 is a deficient number, since it is larger than the sum of its proper divisors (13094861497).

64800455255 is a wasteful number, since it uses less digits than its factorization.

64800455255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22461745.

The product of its (nonzero) digits is 960000, while the sum is 44.

The spelling of 64800455255 in words is "sixty-four billion, eight hundred million, four hundred fifty-five thousand, two hundred fifty-five".

Divisors: 1 5 577 2885 22461163 112305815 12960091051 64800455255