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64242104450 = 25231211196429
BaseRepresentation
bin111011110101001000…
…001011100010000010
320010211010212001001212
4323311020023202002
52023031434320300
645302403130122
74432656610106
oct736510134202
9203733761055
1064242104450
1125276aa1a07
121054a673942
13609a588574
143176029906
151a0ed9c935
hexef520b882

64242104450 has 48 divisors (see below), whose sum is σ = 123930044160. Its totient is φ = 24749928000.

The previous prime is 64242104431. The next prime is 64242104453. The reversal of 64242104450 is 5440124246.

It is not an unprimeable number, because it can be changed into a prime (64242104453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 228836 + ... + 425264.

It is an arithmetic number, because the mean of its divisors is an integer number (2581875920).

Almost surely, 264242104450 is an apocalyptic number.

64242104450 is a deficient number, since it is larger than the sum of its proper divisors (59687939710).

64242104450 is a wasteful number, since it uses less digits than its factorization.

64242104450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196683 (or 196678 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 64242104450 its reverse (5440124246), we get a palindrome (69682228696).

The spelling of 64242104450 in words is "sixty-four billion, two hundred forty-two million, one hundred four thousand, four hundred fifty".

Divisors: 1 2 5 10 25 31 50 62 155 211 310 422 775 1055 1550 2110 5275 6541 10550 13082 32705 65410 163525 196429 327050 392858 982145 1964290 4910725 6089299 9821450 12178598 30446495 41446519 60892990 82893038 152232475 207232595 304464950 414465190 1036162975 1284842089 2072325950 2569684178 6424210445 12848420890 32121052225 64242104450