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65289704928 = 253797157299
BaseRepresentation
bin111100110011100100…
…011101010111100000
320020112011002122202120
4330303210131113200
52032203131024203
645554344544240
74500640222650
oct746344352740
9206464078676
1065289704928
1125764377728
12107a1482080
1362066208c6
143235208360
151a71d32b53
hexf3391d5e0

65289704928 has 48 divisors (see below), whose sum is σ = 195869116800. Its totient is φ = 18654201216.

The previous prime is 65289704917. The next prime is 65289704947. The reversal of 65289704928 is 82940798256.

It is a tau number, because it is divible by the number of its divisors (48).

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 7 ways as a sum of consecutive naturals, for example, 48577978 + ... + 48579321.

It is an arithmetic number, because the mean of its divisors is an integer number (4080606600).

Almost surely, 265289704928 is an apocalyptic number.

It is an amenable number.

65289704928 is an abundant number, since it is smaller than the sum of its proper divisors (130579411872).

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

65289704928 is a wasteful number, since it uses less digits than its factorization.

65289704928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97157319 (or 97157311 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 65289704928 in words is "sixty-five billion, two hundred eighty-nine million, seven hundred four thousand, nine hundred twenty-eight".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 84 96 112 168 224 336 672 97157299 194314598 291471897 388629196 582943794 680101093 777258392 1165887588 1360202186 1554516784 2040303279 2331775176 2720404372 3109033568 4080606558 4663550352 5440808744 8161213116 9327100704 10881617488 16322426232 21763234976 32644852464 65289704928