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64464051704 = 23134115118211
BaseRepresentation
bin111100000010010110…
…110101110111111000
320011101121111010110112
4330002112311313320
52024010244123304
645340412203452
74441323253463
oct740226656770
9204347433415
1064464051704
1125380305198
12105b0a69588
1361045583c0
1431976c22da
151a245deb6e
hexf025b5df8

64464051704 has 32 divisors (see below), whose sum is σ = 133342629840. Its totient is φ = 29026963200.

The previous prime is 64464051703. The next prime is 64464051737. The reversal of 64464051704 is 40715046446.

It is a super-2 number, since 2×644640517042 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64464051703) 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, 7554842 + ... + 7563369.

Almost surely, 264464051704 is an apocalyptic number.

It is an amenable number.

64464051704 is an abundant number, since it is smaller than the sum of its proper divisors (68878578136).

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

64464051704 is a wasteful number, since it uses less digits than its factorization.

64464051704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15118271 (or 15118267 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 41.

The spelling of 64464051704 in words is "sixty-four billion, four hundred sixty-four million, fifty-one thousand, seven hundred four".

Divisors: 1 2 4 8 13 26 41 52 82 104 164 328 533 1066 2132 4264 15118211 30236422 60472844 120945688 196536743 393073486 619846651 786146972 1239693302 1572293944 2479386604 4958773208 8058006463 16116012926 32232025852 64464051704