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64347024445 = 51117233977537
BaseRepresentation
bin111011111011011000…
…011010110000111101
320011002110021112020121
4323323120122300331
52023240314240240
645321032014541
74435402453234
oct737330326075
9204073245217
1064347024445
1125320243950
1210579831451
1360b62325c2
143185d3bb1b
151a191c504a
hexefb61ac3d

64347024445 has 64 divisors (see below), whose sum is σ = 93315856896. Its totient is φ = 42018324480.

The previous prime is 64347024407. The next prime is 64347024457. The reversal of 64347024445 is 54442074346.

It is a happy number.

It is not a de Polignac number, because 64347024445 - 215 = 64346991677 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 63 ways as a sum of consecutive naturals, for example, 8533717 + ... + 8541253.

It is an arithmetic number, because the mean of its divisors is an integer number (1458060264).

Almost surely, 264347024445 is an apocalyptic number.

It is an amenable number.

64347024445 is a deficient number, since it is larger than the sum of its proper divisors (28968832451).

64347024445 is a wasteful number, since it uses less digits than its factorization.

64347024445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7990.

The product of its (nonzero) digits is 1290240, while the sum is 43.

The spelling of 64347024445 in words is "sixty-four billion, three hundred forty-seven million, twenty-four thousand, four hundred forty-five".

Divisors: 1 5 11 17 23 55 85 115 187 253 391 397 935 1265 1955 1985 4301 4367 6749 7537 9131 21505 21835 33745 37685 45655 74239 82907 100441 128129 155227 173351 371195 414535 502205 640645 776135 866755 1409419 1707497 1906861 2946967 2992189 7047095 8537485 9534305 14734835 14960945 32416637 32914079 50867213 68820347 162083185 164570395 254336065 344101735 559539343 757023817 1169945899 2797696715 3785119085 5849729495 12869404889 64347024445