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79982642050 = 2521818837861
BaseRepresentation
bin100101001111101010…
…1100100001110000010
321122110010110012100221
41022133111210032002
52302301024021200
6100424333333254
75531021145223
oct1123725441602
9248403405327
1079982642050
1130a14130873
121360203722a
13770866813c
143c2a73b24a
152131be091a
hex129f564382

79982642050 has 24 divisors (see below), whose sum is σ = 149589652212. Its totient is φ = 31816296000.

The previous prime is 79982642011. The next prime is 79982642087. The reversal of 79982642050 is 5024628997.

It can be written as a sum of positive squares in 6 ways, for example, as 22502100049 + 57480542001 = 150007^2 + 239751^2 .

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, 4409881 + ... + 4427980.

Almost surely, 279982642050 is an apocalyptic number.

79982642050 is a deficient number, since it is larger than the sum of its proper divisors (69607010162).

79982642050 is a wasteful number, since it uses less digits than its factorization.

79982642050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8838054 (or 8838049 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 79982642050 in words is "seventy-nine billion, nine hundred eighty-two million, six hundred forty-two thousand, fifty".

Divisors: 1 2 5 10 25 50 181 362 905 1810 4525 9050 8837861 17675722 44189305 88378610 220946525 441893050 1599652841 3199305682 7998264205 15996528410 39991321025 79982642050