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64424509470 = 2325715827883
BaseRepresentation
bin111100000000000000…
…000000000000011110
320011021212002011201100
4330000000000000132
52023420133300340
645332440453530
74440333203136
oct740000000036
9204255064640
1064424509470
112535aa57562
121059b77a2a6
1360c92c2029
14319234bac6
151a20dcd830
hexf0000001e

64424509470 has 24 divisors (see below), whose sum is σ = 167503724856. Its totient is φ = 17179869168.

The previous prime is 64424509469. The next prime is 64424509507. The reversal of 64424509470 is 7490542446.

64424509470 is a `hidden beast` number, since 6 + 4 + 42 + 450 + 94 + 70 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 357913852 + ... + 357914031.

It is an arithmetic number, because the mean of its divisors is an integer number (6979321869).

Almost surely, 264424509470 is an apocalyptic number.

64424509470 is an abundant number, since it is smaller than the sum of its proper divisors (103079215386).

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

64424509470 is a wasteful number, since it uses less digits than its factorization.

64424509470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715827896 (or 715827893 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 64424509470 in words is "sixty-four billion, four hundred twenty-four million, five hundred nine thousand, four hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 715827883 1431655766 2147483649 3579139415 4294967298 6442450947 7158278830 10737418245 12884901894 21474836490 32212254735 64424509470