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64784250050 = 2521399668077
BaseRepresentation
bin111100010101011100…
…010011010011000010
320012012220222220000112
4330111130103103002
52030134232000200
645432251151322
74452262016402
oct742534232302
9205186886015
1064784250050
1125525024a23
1210680145542
1361559a8990
1431c8032802
151a4278d535
hexf157134c2

64784250050 has 24 divisors (see below), whose sum is σ = 129767837556. Its totient is φ = 23920338240.

The previous prime is 64784250001. The next prime is 64784250127. The reversal of 64784250050 is 5005248746.

It can be written as a sum of positive squares in 6 ways, for example, as 32163194281 + 32621055769 = 179341^2 + 180613^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49833389 + ... + 49834688.

Almost surely, 264784250050 is an apocalyptic number.

64784250050 is an abundant number, since it is smaller than the sum of its proper divisors (64983587506).

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

64784250050 is a wasteful number, since it uses less digits than its factorization.

64784250050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99668102 (or 99668097 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 41.

Adding to 64784250050 its reverse (5005248746), we get a palindrome (69789498796).

The spelling of 64784250050 in words is "sixty-four billion, seven hundred eighty-four million, two hundred fifty thousand, fifty".

Divisors: 1 2 5 10 13 25 26 50 65 130 325 650 99668077 199336154 498340385 996680770 1295685001 2491701925 2591370002 4983403850 6478425005 12956850010 32392125025 64784250050